Just so you can compare - we went to Coco Cay. It is nice, but how old is your son? There isnt much there for older kids, but my 3, 5, 7 year old nephew and nieces had fun - my 17 year old neice went back to texting after bout an hour - lol. there is a pool with basketball hoops, a lazy river, a kiddie structure with sprinklers and one of those dumping buckets and a few little slides on it, 3 bigger slides, some "stepping stones", a big hot tub and a little area for toddlers that was shaped like a boat with a little slide on it. All in all, its more like a few hour adventure.
Hope that helps!!