I don't know if you're planning on staying onsite. If you are, you'll have no problem even if it is crowded since you'll have express passes for almost every ride and you could use early park entrance for the Forbidden Journey. Even if you stay just one night onsite, you get express passes for your entire party for your check-in and your check-out days. We went on Thanksgiving a couple years ago, staying T'Giving night, going two park days and loved it. It was much less crowded than Disney and we didn't have to wait in lines. We were at Disney from the previous Saturday though T'Giving morning.