Back in the day, I only worked week days. I was worried about just doing weekends. But, since restarting again after a break, I now only work Saturdays. As has been said, the clients know that's their ONE chance in the week to see you so they do make an effort to visit. It's all very short notice and a lot of shorter bookings rather than one or two hour ones I've found - don't know if anyone else has noticed that?