Travel

There are many flight options from Atlanta to Hanoi (Noi Bai International Airport). I recommend you fly into Hanoi, then take a car ride 2hr 30 min to Ha Long Bay. OR I highly suggest you stay 2 nights in Hanoi and explore the French Quarter before traveling to Ha Long.
Bus option: Book in advance here. There are options from bus sleeper to Limousine van.
1. https://booking.baolau.com/en/s/hanoi/ha-long/?source=northvietnam
2. https://12go.asia/en/travel/hanoi/halong-bay-hon-gai
Fly from Hanoi to Ha Long Bay - amazing view: https://www.seaplanes.vn/en/
Motorbike Rental: https://bikesbooking.com/en/?sub_id=c53c013d3f574d5b94a22da60-260655&utm_source=travelpayouts
Private taxi:
CP Taxi
(+84) 024 3826 2626
Mai Linh
(+84) 24 3833 3333
Thanh Cong
(+84) 24 3628 2828
There is no Uber in Vietnam, but there is Grab (aka Vietnam Uber) but it only operates in Hanoi, Danang and Ho Chi Minh City.
Below are hotels in Hanoi- highly recommend you stay and explore Hanoi for a few days