Kelly,
I would most certainly watch but I am not sure I would pay for it and that is your question.
Would I pay for it if discounted, maybe. Not that it is about the money I would just prefer to book the session.
To answer your question I would have no issue taking care of business on my own - I think it would be more weird to direct or join in afterward. Unless invited of course
If it were girl on girl I may be more inclined to watch. Instead of the girls trying to figure out how to take care of me in a FMF they could just get busy. IF they were into each other that is something I would want to see. Never know, I might get lucky at the end of it!