"Right on the money again Brian!
99% of folks at a mobile gig are there for fun - the DJ's job is to enhance that.
There is of course always that 1% who are also "DJ's" that look closely at what you use and comment.. I always answer them "So you have tonight off then? Where are you gigging?" Most either shut up or smile knowingly and get on with enjoying themselves :)
I enjoy the bedroom bangers the most - I point them to the DJ Tutor web site and vids.. then I tell them to follow their dream!"