Same here. I actually came to the shop a few minutes earlier than my booked time. And was told by the owner another guy popped in just ahead of me and the WL took him into the room straight away.
In fact I can only have myself to blame. When I made the booking over the phone, the shop owner only asked who I wanted to see and for how long. She didn't even bother to ask my name. She hung up the phone while I was trying to give her my name.
So, there you go. A booking system without taking name.