One time, my friends and I arrived there like 2 hours before registration opened, and we were like the 3rd to 4th group to be in line, but we had a few people who were under 18 and we didn't have signed parental permission forms, so we had to leave, drive back to our town and get it signed... We got back about half an hour after registration opened, and the line went outside, winding around the building. So I would recommend that you get there a bit earlier than noon. Because it's probably going to get pretty warm that day, because for some reason, it's always warm on the day's of con.