A little off topic, but if you go to DAK and don't see Finding Nemo the Musical, you don't know what you are missing. My family LOVED it (wife, kids 4,6,8).
DINOSAUR, on the other hand... my kids are too scared of it. I think it's okay, and would like to ride it with my wife. Riding with scared kids that you're trying to keep from jerking around too much is just not very fun, though. So, my input is: Fun, but not necessary.
My 2 oldest loved Everest, BTW. Roller coasters they can do, dark and scary they don't do so well...