i've had 5 in total.
Only one included full interaction with the girls.
Similar to you this was suggested after a 1-2 meeting, fucking glad i went through with it as i still get a semi when i think back.
The sight of a girl licking pussy whilst having my cock sucked is a memory that will last for years.
I would make it clear to the prossie up front, no interaction, no meeting.
Good luck