A few years back, I worked sporadically as a shopper for bars. Just the Bennigans/Chilis/Applebees type places, not nightclubs. Would watch and note how bartender poured (over/short), whether or not they underrang drinks, etc. Also made note of whether or not either they or cocktail servers ignored certain types of patrons. Sometimes as a joke I would try to order a Screaming Viking.