I've done a few private parties doing magic, and walkaround restaurant with magic and mentalism.
I haven't done a private gig for mentalism yet, and not to long ago the oppurtunity arose. Unfortunately I had no material or routine set up for something like this, the woman had horrible planning and I had no idea how long or what type of audience I would have.
I was psyched though, and I talked with D ICE R about it and he brought me down to earth. I knew it wasn't good and with the ladies planning I didn't know if I was going to be hired as a mentalist, magician, or a clown (I don't do clowns.)
My first ever offer for a private party for mentalism and I turned it down because I had no plan for this type of stuff yet. I probably avoided an incredibly bad situation, and all I can do now is actually plan out now what I need to have ready, so next time I can accept the gig.