*I* won't sit through It's Tough to be a Bug again. Scary scary. Don't take a young child to it.
We easily did AK in a morning, we saw Lion King (MUST SEE), Tarzan Rocks! (loud, but Tarzan wears next to nothing and is hot so was worth it to me LOL), rode the Primevel Whirl, Dinosaur and Its Tough to be a Bug... that's all I remember.
I think you can def hit the highlights, which would be Safari and Lion King IMO. We haven't done the safari yet, but I think its the whole point to AK really. Dinosaur is good, but not appropriate for small children. My husband enjoyed it.
Remember that it closes really early, so get there as soon as you can. =)