I'd definitely keep an eye on this, maybe even use it when you're there:
http://66.77.171.132/MobileWeb/ParkMenu.aspx
It hasn't been too bad these past few weeks, but I'd imagine with the May 28th day coming up (which is the beginning of the HP package), it'll be picking up.
If you're able to park hop, you could always do that if crowds got overwhelming.
I'll be over at the Studios myself on Saturday, but I won't really be riding rides so crowds won't affect me too much.
I hope you have a fantastic weekend!