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Atlantis Banquets & Events
All-inclusive venue
The venue takes care of it all - food and beverage, rentals, the works!
Full wedding (ceremony and reception) pricing
Starting at $139 for off-peak dates, and $149 for peak dates
Packages
Prices start at $139
Guest capacity
Up to 350 seated guests
About this venue
Atlantis Banquets & Events can accommodate your wedding for 50 to 350 guests in one of nine diverse locations including the modern and beautiful Sea Star Ballroom with sweeping views of the Treasure Cove Resort Marina and Peconic River. The Coliseum Room is another perfect venue located within the Long Island Aquarium, which houses our most captivating and colorful aquatic habitats. Your ceremony can take place outside, in the Riverside Pavilion just on the banks of the river, or in the Grand Foyer of the Sea Star Ballroom, with beautiful marble features and a stunning Chihuly-inspired glass chandelier. An event like no other, only Atlantis Banquets & Events can bring the element of nature to your wedding with photo sessions including our penguins, sea lions, sharks or within our indoor and always tropical Butterfly Garden.
Our event spaces
Coliseum Room
The walls are alive in the Coliseum Room where our magnificent and colorful aquatic tanks offer the most extraordinary background for any event
Capacity – 270 (banquet/ reception), 350 (cocktail reception).
Guest capacity
50-270 Seated
50-350 Standing
Square footage
4,600
Ideal for
Wedding ceremony, Wedding reception, Rehearsal dinner, Wedding shower, Engagement party, Welcome party, After party, Cocktail hour
Guests often feel this space is
“Surprised and delighted”
Included in this room:
As a full service catering facility, all food and beverages, tables, chairs and linens are included. Sharks also included.
The Foyer at The Sea Star Ballroom
At the entrance to the Sea Star Ballroom, this three-story space is perfect for an elegant wedding ceremony.
Made from Italian marble and including stunning architecture, a grand staircase and Chihuly- inspired glass chandelier, this room is perfect for wedding ceremonies or cocktail parties. Capacity – 100 (banquet/ reception), 140 (theater).
Guest capacity
50-140 Seated
50-100 Standing
Square footage
900
Ideal for
Wedding ceremony
Guests often feel this space is
“Luxurious and chic”
Included in this room:
Customized colors for the chandelier, beautiful archways and outside up lighting.
The Terrace
This bright and elegant room is perfect for a shower or post-wedding brunch.
A modern yet traditional room with polished concrete floors, a wood ceiling and four walls of windows, it highly requested for small gatherings for pre- and post-wedding functions. Capacity 80 banquet, 80 standing reception
Guest capacity
Up to 80 Seated
Up to 80 Standing
Square footage
946
Ideal for
Rehearsal dinner, Welcome party, Farewell brunch, Couples luncheon, Other
Guests often feel this space is
“Luxurious and chic”
The Butterfly Garden
Located just beyond the Sea Star Ballroom foyer, within the Long Island Aquarium.
Enjoy this warm and tropical garden setting filled with hundreds of free-flying butterflies, for photo sessions and proposals.
Guest capacity
Up to 25 Seated
Square footage
2,700
Sea Star Ballroom
The right spot for any elegant, formal event
Guests are greeted by our three-story marble foyer, Chihuly-inspired chandelier and grand staircase as they enter the Sea Star building. Our exquisite Sea Star Ballroom with its panoramic wall of windows, overlooks our Treasure Cove Resort & Marina and the tranquil Peconic River. Room Size – 5,310 sq. ft. (Optional two room division) // Capacity – 400 (banquet/ reception- no dancing), 340 banquet (with dancing), 300 (classroom), 650 (theater)
Guest capacity
40-650 Seated
40-650 Standing
Square footage
5,310
Ideal for
Wedding ceremony, Wedding reception, Rehearsal dinner, Wedding shower, Engagement party, Welcome party, After party, Farewell brunch, Other, Cocktail hour
Guests often feel this space is
“Luxurious and chic”
Included in this room:
Extra large wood dancefloor Two mahogany and stone bars Customized outside up lighting, foyer chandelier and bar lights Cozy outdoor balcony overlooking the marina Separate cocktail space
Coliseum Room
The walls are alive in the Coliseum Room where our magnificent and colorful aquatic tanks offer the most extraordinary background for any event
Capacity – 270 (banquet/ reception), 350 (cocktail reception).
Guest capacity
50-270 Seated
50-350 Standing
Square footage
4,600
Ideal for
Wedding ceremony, Wedding reception, Rehearsal dinner, Wedding shower, Engagement party, Welcome party, After party, Cocktail hour
Guests often feel this space is
“Surprised and delighted”
Included in this room:
As a full service catering facility, all food and beverages, tables, chairs and linens are included. Sharks also included.
The Foyer at The Sea Star Ballroom
At the entrance to the Sea Star Ballroom, this three-story space is perfect for an elegant wedding ceremony.
Made from Italian marble and including stunning architecture, a grand staircase and Chihuly- inspired glass chandelier, this room is perfect for wedding ceremonies or cocktail parties. Capacity – 100 (banquet/ reception), 140 (theater).
Guest capacity
50-140 Seated
50-100 Standing
Square footage
900
Ideal for
Wedding ceremony
Guests often feel this space is
“Luxurious and chic”
Included in this room:
Customized colors for the chandelier, beautiful archways and outside up lighting.
The Terrace
This bright and elegant room is perfect for a shower or post-wedding brunch.
A modern yet traditional room with polished concrete floors, a wood ceiling and four walls of windows, it highly requested for small gatherings for pre- and post-wedding functions. Capacity 80 banquet, 80 standing reception
Guest capacity
Up to 80 Seated
Up to 80 Standing
Square footage
946
Ideal for
Rehearsal dinner, Welcome party, Farewell brunch, Couples luncheon, Other
Guests often feel this space is
“Luxurious and chic”
The Butterfly Garden
Located just beyond the Sea Star Ballroom foyer, within the Long Island Aquarium.
Enjoy this warm and tropical garden setting filled with hundreds of free-flying butterflies, for photo sessions and proposals.
Guest capacity
Up to 25 Seated
Square footage
2,700
Sea Star Ballroom
The right spot for any elegant, formal event
Guests are greeted by our three-story marble foyer, Chihuly-inspired chandelier and grand staircase as they enter the Sea Star building. Our exquisite Sea Star Ballroom with its panoramic wall of windows, overlooks our Treasure Cove Resort & Marina and the tranquil Peconic River. Room Size – 5,310 sq. ft. (Optional two room division) // Capacity – 400 (banquet/ reception- no dancing), 340 banquet (with dancing), 300 (classroom), 650 (theater)
Guest capacity
40-650 Seated
40-650 Standing
Square footage
5,310
Ideal for
Wedding ceremony, Wedding reception, Rehearsal dinner, Wedding shower, Engagement party, Welcome party, After party, Farewell brunch, Other, Cocktail hour
Guests often feel this space is
“Luxurious and chic”
Included in this room:
Extra large wood dancefloor Two mahogany and stone bars Customized outside up lighting, foyer chandelier and bar lights Cozy outdoor balcony overlooking the marina Separate cocktail space
Atlantis Banquets & Events packages
Signature Package
50-340 guests
Peak pricing $179-224
Off-peak pricing $154-214
Your cocktail hour features a great selection including a charcuterie presentation of fine Italian specialties, 10 select passed hors d’oeuvres, 1 carving station, a pasta bar, 2 specialty stations and more. Start with a duet appetizer then your selected main course (choose 5 entrees for your guests’ selection). In addition to a classic wedding cake, your guests will be delighted with an additional dessert option and a cappuccino, espresso and cordial bar. Event enhancements are also available.
- Valet parking, wedding party suite
Flutter of Romance Package
50-340 guests
Peak pricing $154-199
Off-peak pricing $139-204
Includes the Tuscan Table assortment of fine Italian specialties, 10 select passed hors d’oeuvres and 1 signature specialty station. Dinner for this package is served as a buffet and you’ll select 8 different food options. End the evening with your selected wedding cake.
- Valet parking, wedding party suite
All-Inclusive Sweetheart Package
50-100 guests
Peak pricing $18,995-24,995
Off-peak pricing $11,995-24,995
This package is intended as a date specific option that will usually take place a few months after booking and is offered at a discounted rate. You may choose either the Sea Star Ballroom or Long Island Aquarium for your reception. This all-inclusive package includes a photographer, DJ and flowers along with your cocktail hour, reception and open bar. Pricing based on venue and number of guests.
- Valet parking, wedding party suite
Available services that can be provided by Atlantis Banquets & Events
Services & amenities
- Bar services
- Catering services
- Clean up
- Dance floor
- Dressing room / Bridal Suite
- Event coordinator
- Event staff
- On-site accommodations
- Service staff
- Set up
- Wheelchair accessible
- Wifi
Transportation & access
- Valet - free
Accommodations
- Honeymoon suite
- Luxury suites
- Room blocks offered
Reviews
Write a review5.0 out of 5
1 review
Enchanting Aquarium Wedding
From our initial tour of the venue, we knew that Atlantis Banquets and Events was where we wanted to have our wedding. If you are looking for an incredibly unique experience, this is it: The venue overlooks the water so guests were able to watch the sunset over the water during cocktail hour, and then, everyone moved inside to the Long Island Aquarium where they were able to dance and dine amongst the fish tanks. The aquarium transformed that evening into what felt like an enchanting underwater forest. Atlantis has an in-house caterer, and the food was exquisite. We received comments from guests who are notoriously picky eaters, and they said this was the first wedding where they’ve been able to eat (and enjoy) the food! There was a huge team working the evening of our wedding, and they kept everything running smoothly. The staff were all incredibly professional and kind throughout the night. We worked with Joan and Bryan throughout the planning process, and they were absolutely wonderful. They were responsive, detailed, and helpful throughout the year as we planned and finalized event details. They also helped us coordinate our after party AND our hotel block (both within a few steps of the venue). I truly think Atlantis Banquets and Events, and the Long Island Aquarium, is a hidden gem of event venues on Long Island. The location is stunning and conveniently located in downtown Riverhead, the venue is so unique and beautiful, the food is delicious, and the staff is wonderful. Take a tour of the venue – You won’t regret it!
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