I don't want to be the guy who is asking for the moon without providing appropriate consideration but I also don't want to get taken advantage of. Would asking for something like a little basic role play to start off a session (e.g. pretend to be my girlfriend's sister and seduce me) be considered part of normal service?
unless the gent required me to purchase something I would not normally have... like a wedding dress, which I did purchase for a client and was reimbursed.
But every lady is different, and I would just ask her. No harm in that, as long as you don't link the question to something sexual. Good: Would you consider starting our session with a little role play in which you are my girlfriend's sister? Would there by any additional gift for that, if you are OK with the role play? Bad: Would you pretend to be my girlfriend's sister, and drop to your knees for a BBBJ as you seduce me? Is there a extra charge for that? See what I mean? Good luck! TabNo, I never charge extra for role play. I do appreciate it when you let me know in advance. That way I can have my mind wrapped around your fantasy (what ever it might be) when you arrive.
Putting on the high heels for a moment to walk in another's shoes...
Imagine if all your clients were directionless: they just walked in wanting their worlds rocked but have no idea what it takes. Then along comes a guy who says "hey, I really like XYZ role playing, are you interested or can you expand on those lines?"