I have also been there. It is really nice. We went there on "The Big Red Boat" when it was still in operation. The only reason I wanted to go, was to go on the slide. Then what do ya know, they said I cant, so we took the tour. My parents went to the casino, while my brother, my cousin, and I went on the tour with my aunt. After being shown 2904893 chandeliers, we finally went outside. It's AMAZINGLY themed. Just animals everywhere, outside, inside, everywhere you look. The inside aquarium, I believe its called "The Dig"? was really nice aswell. When I went, they also had a musuem, where you can touch some of the animals. VERY nice place...
And as others said, be careful in nassau. The cab drivers are insane, the one we had was nice, but drove worse then all of my grandma's and aunt's combined. Nassau, with the exception of Paradise Island, is very dirty too. One thing I remember was a dead dog in the street, and people just walking over it, and it looked like it had been there for days