We actually stayed at Ren. Ocean Suites last week and there are definately TONS of iguanas on the walk over from ocean suites to the boat dock. You can see these for free. We went with my toddler of 2.5 yrs old and a 5yr old. Their favorite thing to do on the island was also free (figures).... that was dancing at night where some 'live music' played nightly in the small shopping strip right next to the renaissance ocean suites on downtown. We walked to dinner and ended up there most nights. I have both girls and they loved dancing to the music there.

De Palm -- we contemplated doing this and were glad we didn't do it. We have MANY water parks near our home and some people we spoke to while on Renaissance island mentioned their kids didn't really care for it. The picture of de palm water park looks almost microscopic compared to the many large US waterparks we have. My kids loved at renaissance island to feed the fish cheezitz crackers and feed the parrots cherries that waiter Jorge gave them. We slept / napped on the hammocks under palm trees and you could easily spend a day there.