If you are breaking up with the little ones and doing thrill rides, then I suggest hitting Disney-MGM Studios and doing Tower of Terror and Rock 'n' Roller Coaster, which are great. Obviously, big thrills will have fastpass, but you will still want to visit early. I like the Disney-MGM Studios because it has attractions all-around for everyone. Playhouse Disney has been rated the best little-kid attraction in Disney. The young ones will love it, especially if they watch Nick Jr. If you have a Little Mermaid Lover, she'll love the Little Meremaid show. Who Wants To Be A Millionaire will be good for the whole family, and since you can play along the older ones may like that 2. Disney-MGM Studios is my fav park.
Animal Kingdom doesn't have 2 many thrill rides. The little ones I doubt will do DINOSAUR, but may want to try Primeval whirl, which is a spinning coaster. The kids will want to try out the games at the midway. If you have a Pochahantas fan, there is a show for Pochahantas show there, as well as a lion king show, which your older ones will even like. Tarzan Rocks is good too, which features an extreme skating stunt at the end. It also has the Kali River Rapids ride, which you may want to do. I have seasonal Passes and they are still wet from that ride.
Do what old lost bot said about the pool thing, it gets very hot around noon.
Are you planning on going to a water park? If you are both water parks feature excellent kid sections. I recommend Blizzard Beach. If you go there, do Summit Plummet. But do that early or late in the day, cuz it draws 2 hour waits sometimes.
I hope I have helped in one way or another, and I hope your house is okay from the hurricanes.
I may be able to give you more tommorow, but I gotta get packing.
