Yes you can use all of the RIU amenities and the AI in optional. The rooms are older but in pretty good shape. They have one building with timeshare units and are either 1 or 2BR units. 1BR can have 1 or 2 bathrooms. We almost purchased a week there and checked out some of the units which can be Oceanfront, Pool and Ocean view, ocean view and view of Gardens and Radisson hotel. The best units in my opinion are oceanfront with pool and Ocean view as my second choice.
If you are asking because you want to exchange that would be extremely difficult and your best chance of staying there would be to rent from a current owner.