Why do you have to be a member to make a booking!, some punters might want to make a booking to see a girl but don't bother and go elsewhere because of the membership system.
Just because someone has been before does not make their booking more likely to take place.
I think it is to avoid a lot of no shows & in all fairness it seems to work
It is more to ensure those who are booking are genuine punters & not just time wasters
hence becoming a menber when you do attend is benificial
to your other point if you walk in & book then your boking will be made & no one will be able to phone & take that slot just because they are a member
I know Sandys does seem to have a few things that get moaned about from time to time by the punters & the girls
the booking system, the times including the showering, name changes by the girls, the place been busy
but at the end of the day the place is still open & a favourate of a lot in the manchester area so they must be something right & have a vast choice of girls with an up to date website & accurate rota