We love the AK. There is so much to see that most people miss out on. For your kids I would suggest making sure you take them to see the Nemo show if they are fans. It's fantastic. Also the Festival of the Lion King is one of the best shows we've seen at WDW. Rafiki's Planet Watch is often overlooked by a lot of people, but it's a lot of fun. And we've been able to see some characters you don't often see like Jiminy Cricket, Pochahontas and Rafiki. The safari is a lot of fun, but it take a bit of time. I would probably allow more than 30 minutes for that. Dinosaur is really LOUD and very bumpy. At least one part of that ride can be sort of scary for some kids. You can find characters at Camp Minnie Mickey. And also It's Tough to be a Bug is a lot of fun, but it's also loud and can be scary for some kids. It's in 3d which is cool, but if your kids hate the dark and don't like loud things..it's one you can pass and come back to when they are older.
Hope this helps a little!