If you are going to Disney multiple days and can swap parks that day, I'd recommend it. Several years ago, when the event was at DHS, we were in the park the same day. It was a mad house. The park was extra packed during the day because many people make a day out of it and don't want to have to travel between parks. Add to that, I found the crowd to be heavily teenagers and not as well behaved as you might guess based on the fact that they're there for a "Contemporary Christian" rock festival. Most were pretty good, but there were quite a few rowdy groups (Man, I am such an old fogey!)