Had an SP needing to pee like 4 times in an hour. I think she was on drugs, she kept drinking water all time and said many times how it was hot. Im a kinda guy who is very sentitive to heat (don't tolerate it well) and i wasn't feeling it at all that day. Still that SP was model-like hot and manage to still give me a good service regardless. I mean not super "GFE" or sensual, but a good PSE ride, so it was fine by me. Then later found out she was actually kinda of a model and appeared in semi-popular (at the time) Quebec stuff and that elevated the memory lol.
When it comes to #2 never had an SP do it and closest it ever gotten to me is i did one an hour before the ETA of the SP i was receiving... Made sure to let fan run a very long time and when it was shower time i took extra extra care

She never noticed it (to my knowledge).