I act halfway between Bill Murray in Lost in Translation and Bill Murray in Ghostbusters. Say hello, say something nice, introduce yourself and give a name (any name) then gauge if the lady is chatty then take it from there.
Be natural, the best ladies know how to set the mood and are good with strangers (others are not), so being overly manic or quiet and nervous can make them feel the same. You want a chill vibe, then let the lady take the lead, when she asks what you would like, ask what is on offer, then go with her first option on an initial visit. Then lay back and enjoy. I always ask before touching on a first visit, and compliment the lady's looks.
First time I went I was so nervous the girl kept asking me if I was police. So no worries or judgment, just enjoy then decide if this is something for you. Good luck!