We just went with our DD5 and DS4. They absolutely loved the rides at Happy Harbor (better than the rides at MK) & the lines were non existent or very short. They are kind of like carnival rides but my kids could have spent the whole day there. They also loved the Horizons show. We also saw the Shamu show and Clyde & Semore. They were both good but Horizons was definitely the best. My DD liked the Wild Arctic ride but DS was too short, however, you can do a non-motion version of the film as well. They really liked the polar bear exhibit after the movie. The line for that seemed to get long so go first thing if you want to ride it. I'd skip the manatees & the alligators as they were kind of boring. Touching the stingrays was a big hit. I'd skip feeding the dolphins f you have limited time, it was fun, but not a must do. Its a great place, we all really enjoyed it.
