Very much disagree here. There are many people who's work schedule only allows things to be booked at this time.

For me, I've requested to be last because I can't deal with potentially seeing clients after me. we've done last with me over a year now and he's done noting inappropriate because we are alone etc, it's no different than if I was in day time, except no one else in in the building. It works for me though and if he was forcing me to do daytime sessions instead of being last like I've asked, THAT would be the problem