I work locally to where I live and so I guess it was only time before I was booked by someone I know. I never thought about it though but it happened recently. Took a booking from a guy and when I went to meet him in the prearranged location I immediately recognised his car he has owned for years. He is a family friend and I have known him for years, I was taken aback and stood there dithering whether to phone and cancel or go and speak to him. He seemed shocked that it was me he booked but I think he knew who he was booking though looking back. I offered cancel but he said he was OK with continuing with the booking.
I have thought about this situation a lot, in his case I know he is recently divorced, but I know his ex, I went to school with his children. If he was in a stable relationship I would have cancelled.
So curious as to what everyone else would do, guess others must have been in this situation