The best time to go is when they offer the 2 for 1, half priced specials. I make an event out of it and tell my friends. We get in line before 8AM when it opens and wait our turn. The usual wait is about an hour so bring a book to read or chat it up with friends while you wait.
The first time I went, I asked the short, overweight and out of shape student for a deep tissue massage and spent the whole time telling the guy he could apply more pressure. He seemed very awkward and spent more time making sure my whole body was covered up than massaging me. Not that great an experience, but I went back.
The second time I told the girl about my first experience. Now this chick was tall, strong and had hands of steel. She tore me up and I kept cringing in pain. I vowed NEVER to go back, but changed my mind after a few hours and the pain had worn off. I felt great!
I've been three times and can't remember the third experience. I don't know if that's good or bad, but I'll probably try it again.