I went to the AP preview last night. You can stand in the roped off area from the entrance to the Hippogriff ride to the butterbeer cart. They keep asking people to move to the front and squish together as the show time got closer (maybe this is just for the first showing- it was more full then the others). If you can try to get the 2nd showing. We watched the first show from between the Hippogriff line and the stage. Then we watched the 2nd one standing behind the roped off area by the Quidditch store. Both views were great. I think we all preferred standing back farther, since you saw more of the castle. I don't think there are too many bad places to see it. We waited about 40 min to save a spot, but I wouldn't do that again (it's not like Disney fireworks where you want to camp 2 hours for the perfect spot). It really was beautiful.