From Facebook...

The VIP RiverClub will be a private, members only Club currently planned with an outside deck overlooking the pool. The Club will have its own bar and servers and there will be special "Members Only" events, benefits and perks as we progress. The benefits will keep changing and expanding to keep the Members coming back year after year.

The $500 RiverClub Founder package includes a 1-year RIverClub Membership, but also designation for life as a "Founder" with your name engraved on the RiverClub Founder's Wall as well as the 2-nights, shirt and hat mentioned in the package.