You don't say if you're doing the before or after party. I'm assuming before, since you're concerned about desserts being gone if you show up at 7:30. From my experience and what others have said, the desserts are kept well stocked, so you shouldn't have to worry about that. Perhaps you could check in early (we often check in around 7 and are let in at 7:10) so you can be sure you have first crack at the desserts, and enjoy those with your kids for a while, and then leave to do something else. You'll be given a wristband, so you're free to come and go. Or you could wait to check in until 7:15 or 7:30, whatever you feel will give you enough time to have some desserts, and go over to the viewing area just before 8. There will be plenty of places to stand, even if you go that late. As I noted in a previous post, DH and I see no need to go to the viewing area an hour or more in advance to stake out a spot, since you can get a good view from anywhere.