Crowds will be light as always. If you want to go to the waterpark, I suggest hitting it for the first couple hours, then heading to Superman which will still have a very short line around Noon, though it will increase a bit over the course of the day. I say ride SROS as much as you want, hit Batwing before the line gets too long, walk onto everything else in the park (definitely front row on Wild One), then return to SROS at the end of the day when it's running faster. Makes for a fun day when you don't really have to wait for much.