We went to WAP 2 summers ago with a 7-year old and 9-year old. We were there from about 11 until 9 at night. We rode the tram twice--day and evening, took our time wandering around, watched the shows, played at the playground, got wet at the little area where kids could play, rode the carousel and just had a great time. Legoland has a water play area that is new where kids can get soaked. If it is a warm day, they can easily spend an hour or more there. Take a change of clothes.