My DS is 5 and when he talks about his favorite things at Mickey World he loves the playgrounds. Sometimes we forget that little kids still just like to run around and have fun. He really likes the Pooh Park as he calls it across for the Pooh ride in Disney. We usually try to let the little ones run around in the playground areas while we sit and rest and have a drink or ice cream. So you may want to check out where the playgrounds are in each of the parks.