Interesting.  I also went to the Aurora, IL audition (I live in the next town over), but I got there for the last hour.  There wasn't a line, there were only one or two other people there, and they weren't in costume, either.  (I wore a full Chicago Cubs uniform.)  I don't know if I had enough enthusiasm for what they were looking for, but at least it was pretty sincere.  (I didn't scream.)  The whole thing took about five minutes.