Rage Expo

My friends and I are going to Rage Expo for the first time this weekend, and we were wondering about arrival time, how full it gets etc. Can anyone who has been before give us some advice? We're not going for anything specific, and really just want to loop the place at least once and then probably go home. Doors open at 9am on Saturday morning. What are the lines to get in generally like? If we arrive at 8:30, would that be early enough to not be in too much of a queue?

Also anything you know of that is a must see, let me know.

Thanks all, 36 years old and actually quite amped to finally be attending one of these. My older brother played in the Battlefield 2 LAN like 20+ years ago and I've wanted to go ever since. If you're going and see a tall dude with a beard wearing a cap, say whatsup, it might be me!