I know at Liaison's they let the girls see the customers on the cameras before they intro and they can say no at that point. It’s a way to avoid bumping into family and friends. And I’ve had at least 2 occasions recently where I’ve stopped a booking in the first few minutes as I could tell there was something off. Once she was cramping as she was just starting her period so I just stopped the booking and told the boss she wasn’t up to working.