Be up front about your situation
[QUOTE=Nimda925;6603203]What do you guys think about having FS for the first time in one's life. At a parlor? Meaning, one has not experienced this anywhere else -- in or out of mongering -- and would be doing it for the first time in their life, at an AMP?[/QUOTE]Lots of great advice so far. The one thing I would add is, you have nothing nothing nothing to be ashamed of. You should be completely open about your situation. 'This is my first time. ' That way, there's a better chance she will come to you with the right attitude.
There are women who fantasize about being a guy's first. Not that you should expect that, but it's definitely not the negative it might feel like in your mind.
I was a late bloomer myself, I don't know how old you are. I wish I had known it wasn't as awful a thing I thought it was.