I typically insist on a shower before, even if I have cleaned up and showered at home, which I usually do. To me this is more like a date, so I like to feel my best, and like for the MPA to enjoy it too. It speaks volumes that some places my not have a shower, although I can understand if it's an indy who doesn't like to offer her own personal shower to people...Still, wouldn't they want to see that you took one?