If you are willing to trade "themed" for fun I would suggest checking out Marriott Cypress Harbor, a timeshare resort. So much to do for all ages of your family. They have an activity center that is the best I've seen. Multiple pools, planned activities, and huge two bedroom units, all with the Marriott name behind it to ensure a high level of quality which you may or may not find with "no name" resorts. I've stayed there multiple times with my family and they always had a blast. Take a look. The resort is beautiful as well. You can find week long rentals on eBay and other places.