...well, considering the number of students - and anxious ones at that - it wasn't too terrible. My daughter seemed to have taken it all in stride.
We met up with Mr. Bradley who was his charming & friendly self and the student/greeters were also helpful & friendly - they went through the same ordeal once.
There doesn't seem to be any way to prepare oneself for the experience, other than to be prepared and try to stay as calm & collected as possible. My daughter had a panel of 7 judges, all heads of their particular depts (woodwinds). We heard it was different last year, and different still the year before. She was a little surprised at first (at the number of judges), but it was fine --she has had to audition and compete in front of panels before, so that exp helped.
We've heard various horror stories and tried not to be too bothered by them. I'm sure it must be nerve-racking. --But, you have to keep in mind that you are looking them over as well! I saw various profs wandering around and witnessed them calling in students for their auditions - they seemed quite nice & not intimidating.