Camp, I used to play a very questionable (biker) bar, chock full of 6'2" hairy, bearded, foul-mouthed, multi-tatooed, pierced, knife-wieldin', trouble makin' patrons. (and those were the women!) The big request was "Ferry Cross the Mersey". After I'd sung that, they were pussycats. I think I'd stay away from the John Denver!
Rick