Yes, regardless of whether you are staying at the Inn or just coming for the day, you HAVE to pay to enter the park. It is $7 to enter and keep your receipt; it is good until the park closes at 11 pm!
The ceremony is at the Amphitheater (across from the INN), and the reception is in the Inn located in the Oak room on the second floor.
The dress code is semi-formal. The ceremony is outside in the middle of June, so dress accordingly; men can wear jeans if they like.
Please park at the Cayon Inn, as parking at the Amphitheater is limited and reserved for those who need it. The Inn is approximately 500 feet from the ceremony; the walk is easy and on flat grounds.
It is a public state park, so I would arrive 10 minutes early to ensure you promptly get through the front gate. The speed limit in the park is 20mph; please drive with caution as there may be kids and/or wildlife running amongst. The front gate attendants will know where the ceremony is and will gladly give you directions and a map!
Yes, there will be a cash bar and buffet-style food. Be sure to bring your ID and a hungry stomach!