I only offer rimming when they book a VIP appointment which starts with a shared shower. That way I can clean their crack myself and feel assured it's up to standard!
I only tour, I don't work at home, so in the summer it's really fucking annoying if a guy turns up all sweaty because a lot of hotel rooms have windows that don't open, and I usually book guys with only 15 mins in between, which is not enough time for the aircon to get rid of bad BO smell.
If they only book a quickie then fair enough they don't want to use a third of it having a shower, so just keep your fucking armpits down and I'll deal. If you've booked a half hour or more then just get in the fucking shower, jesus it takes 5 mins if that.