Make sure they visit Shamu's Happy Harbor to get to enjoy all the child's rides. Lots of fun there for the little ones. Defiantly stop by Dolphin Cove to feed the dolphins. If you don’t want to take do that at least take them to the wall to see them. It’s amazing to see them up close. Make sure they see One Ocean and Pets Ahoy is really great for children. What time of year are you going? Also be on the lookout especially over by the Sea Garden for surprise experiences by SeaWorld's animal ambassadors. They are not scheduled but usually you can find them right after the Shamu Show located by the Sea Garden. You can get up close to some wild animals and sometimes pet them. Be sure to talk to educators by the exhibits (under water viewing at Shamu Show, Dolphin nursery etc.) to learn more and sometimes they have special cards on the animals to give to the children to learn more If you will be there during the Christmas Celebration you will have even more to do too. Let me know and I can give recommendations for that as well. I go three times a week and really know the parks well. Please ask if you have any questions.