Maybe the girls are put there to distract you :P But being a girl myself, I didn't find that a problem...
Yes, I felt completely crap after the tests, and then found out that actually I had done "really well", and later found out in my 3rd round interview that I got the same scores as the Air Traffic Controller interviewing me got. So it can't have been all that bad...(I asked what the scores meant, but they didn't have a clue)
Good Luck