shamu's happy harbor is the kid's play area, and it's pretty neat. if you go to SW's website you can download a copy of the map so you can get an idea of the attractions you want to hit. the showtimes don't really vary for the animal's routine, but they're not posted. but like it's been said before, try to take a few minutes when you get the showtimes to plan. SW is a very spread out park and you will walk.
if the kids aren't 42", you don't have to worry about the rides. I wouldn't miss feeding the stingrays and dolphins. as you exit the dolphin feeding area, go left around the pool. there's an underwater viewing area with hydrophones so you can listen to them communicate with each other. the manatee area is cool if you've never seen a manatee. feeding the sea lions and seals is fun. don't miss the shark encounter. blue horizons is a good show, as is clyde and seamore. can't wait for Believe to open.