Was there this morning.
School IS out for many of the locals now, but an "At Capacity" day is still an an at capacity day.
So, I didn't notice any difference from all the other weekends where they hit capacity (basically all of them)... except that I believe the park filled up quicker. I got there at around 9:30am, but I can say with relative certainty that the park was probably at capacity by 10am... I was in the second to last parking row and there were still lots of folks in line behind me to get in. So, as always, the same advice prevails... GET THERE EARLY.
Lines were on par for the norm, although they were already pretty full when I wandered in (again, I got there at around 9:30am... you're better off showing up at 8am). But they were still the usual.
Good luck! =)