That's one of the best things about IOA, when the park opens early, you get to do all the rides in Marvel island before 9am. During slow months, they rope off the Lost Continent and the path leading to Toon Town until 10pm, but you still get to do Marvel Island no matter what. At USF, Shrek and the Mummy are always running when the park opens. It's much better than Disney, because those who arrive early are rewarded. At Disney, the best you can do is be at the front of a crowd walking with the guards to the first big ride. At IOA, you can run the moment you enter the park, and do 3 major rides to start your day before 9am. This definately makes getting to IOA before 9am worth it.