Interesting question... I think I'd want to know prior to the appointment. There's a few things I want to try in regards to piercings, and I'd want to brainstorm with the boy a bit
I have none, not even pierced ears, so I have no way to test my (hopefully pleasurable) ideas on myself!
One of my favorite ex boyfriends introduced me to the Gates of Hell (7 consecutive barbells up the underside of the shaft), and mostly I was terrified that I'd do something wrong and hurt him! He assured me that I wouldn't, and once I relaxed and was able to believe him, we had a great time.
~Mme X~