Stay in a cottage at Nirvana...small kitchen facility and cook service could come in handy. Where to go, what to do... depending on kiddos' ages, after sand castles, playing in the sea on pool toys, etc. gets old, the water park is a good idea, and isn't there a "Jurassic Park" relatively close by (I seem to recall postings about it but never visited) where there are sculptures of dinosaurs, etc...