My advice...at IOA...hit Hulk and Spiderman 1st thing they are the 2 best rides there. I would then ride Dr. Doom if interested, then head to Dueling Dragons ride both of the coasters Fire and Ice there, then JP...if its not too cold you hit Bluto and Dudley Doo rite....avoid Pterandon Flyers it has the longest, slowest moving line in the history if theme park rides and its just not worth it, however if yo walk by and there is no wait, then ride...if 10 people are in front of you expect and hour wait. I exagerate of course but it is slow....then you can go back and hot the few shows you missed and some of the exhibits...one thing about IOA it has some of the longest, I mean long long long queue lines I have ever seen....Dueling Dragons and Dudley Doo rite are long....last time we were there we walked the queue line an walked right on the ride but they both seemed like 10 minute walks....WOW they were long
At US...We always go straight to the Mummy, then Jaws, MIB, ET and then work our way back around hitting everything else...Twister, Shrek, Terminator, Earthquake etc....Now we havent been since Simpsons has opened but I hear its the same principal as Back to the Future so it will not change the way I tour next week....
You will be suprised at the theming at both parks it rates right up there with Disney. I love both Universal and Disney. I get the "Disney magic" feelings when I am there but when I am at Universal its a different magic...no stress, no mobs, no being felt like I have to rush to everything....its laid back and a fun atmosphere....
enjoy both