Let's not forget that a lot of clients enjoy these types of massages in complete confidentiality from their personal lives.
This means that opportunities can be rare and sometimes last minute.
I always preface my last minute requests with, "Sorry for this last minute request......"
I have explained this to my regulars and they know I completely understand if they are not available....or even if they don't respond. There is no pressure on my end.
On another note, a sensual/erotic massage is a very intimate experience compared to a dinner with a friend.
If I had a miserable day in the office, I can still pull off the friend dinner but allowing myself to completely relax/unwind for a sensual massage is difficult for me to do.