Many a tired Mom has found that their children have more fun at the Disney Marketplace than at Disney's expensive theme parks. Why? No lines, great food, kid-friendly attractions, like the Lego store and the BIG run-through fountain. If you have a picky eater, there is a large McDonald's right next to the Lego store. Plus Disney has seasonal activities galore, from sandboxes to trains to playgrounds... This is really a local secret!
Once I sat next to a nice Mom from the Midwest, whose daughter was blissfully playing in a temporary beach at the Marketplace. She said that taking her child to Disney was her dream, but her 5 year old really was exhausted by it all. Disney Marketplace suited the little girl much better. :)