The only suggestion I would have is to see if the screens could be raised a little bit higher than they have been the last few years. I've had to sit in the back because of having the kids and the stroller, and even being 6'2" I was losing the bottom third of the screens to people's heads, and my daughter had to stand on the seats to watch.
If you think that's bad, the first time my friends and I went, one friend and I ended up standing way in the back, and it's harder to see back there. But I know what you mean, the AMV contest event kinda reminds me of a rock concert or something, with as crowded as it gets. But I think it's pretty much the most popular event there, or one of them at least.