i have a similar question - is May a non-busy month? we're planning on IOA on thurs. 5/19 or friday 5/20. B/c i heard of long lines at P. Flyers, I was hoping to get on it w/ our 3 y.o. at 9 a.m.? QUOTE]
I've used this strategy several times and never experienced a closure. A few years ago they used to stop us at the end of the bridge under the Hulk and we walked to Suess Landing and it was roped as well. So no rides were open until all rides opened. I'm guessing that May is busy enough to require the whole park to open at once. You can ask at the turnstile but as a rule they don't have accurate closure info provided to them.