Well, if I can take that seriously (because there is a serious element) it depends really on you - how much you dare act as a customer and not an acolyte... the difference is recognizing that you really do have a fee-for-service. Of course, if you are going to a 'top teacher' and they are sold out then it becomes a sellers market and s/he can do as s/he likes - but they run the danger of loosing students in the long term if and when a new 'top teacher' comes along.
Do you tip your dental hygenist? A shop clerk? Or the umpteen other people who provide you service as part of their jobs? How do you indicate good or bad service there? Its the same in europe - you either say something or you don't go back (or both).
I was simply attempting to discern the difference between the way wait staff are compensated between the US and Europe. Your dental hygenist in the US and shop clerk are paid a wage that is at least the minimum wage. Wait staff are only obligated to be paid $2.13 per hour in the US.
Ah, in which case please ignore what I wrote :roll: As mentioned by others, waiters get a working wage in Europe - indeed really here that its a bit odd: A company hires staff but expect its customers to pay them on top of paying for the product. The question really is why are restaurants so different?
Its an idea, but its not the same as doing it there. Looks like there may be only two students going to the next one - and the other one is more private so it won't be an issue. I'll find some way round - probably by going off-site (the comp hotel) and thereby whisking him away