The pool is incredible, and the inside slide that comes out in an underwater clear tube with sharks swimming around you.
Unfortunatly they require you to rent a room. They do offer deals. I was comped as a cruise agent several years ago, but they stopped doing that to my understanding.
You can see parts of the aquarium in the restaurant area. And there is a public beach next to the property.
You might want to give them a call and ask for special promotions type thing.