I was there. Morning, especially for resort guests was fairly tame. Crowds really picked up at 11am though, and stayed high til 9, then started to fall off. A lot of heat lightning as well as a storm that BARELY missed the MK (but, for instance, 'flooded' the pop century) got a lot of people out of the park. Using the fastpass system (2 tickets and just me as the wife and kid were at home) I was able to ride all the mountains, Pirates, TTA, and astro orbiter from 9pm til midnight.
I posted wait times that I noted from the whole week further up on someone else's request for this time period...