No. I try and encourage people to book up front and pay £10 but if they insist on paying on the day they pay £12. Most of the time this works and people would rather pay the £10. The awkward sod who wanted the private lesson I did not have time to get a deposit from her.... Next holidays I may enforce the pay before the day except for people that I know I can rely on. I now have a better database as well so I can blackball people who mess me around like that.