Well, I'll be at IOA on Saturday, travelling with my Choral group, and the director has informed us that because the competition we're performing in will have it's award ceremony at CityWalk, Universal will be crowded.
She also says that there will be a lot of the other competitors there. Not sure if they'll only be at IOA or if it will also affect the Studios as well, or if there will be a big number of people there.
I have a hunch that most of them will be at Islands for Harry Potter. He's the big draw.