As far as the Barman/Batman thing, I think it may be a cultural/language thing because most often I hear them referred to as bartenders so I wasn't expecting that. Therefore, my mind went to the word that I see most often that looks like that, which, in part thanks to LaraMoon, is Batman.
By the way, wonderful story. I don't particularly like the influence of alcohol because of what it can do to people's judgment, but it can create some very interesting scenarios. See Tea Totaled, Wine,Wine,Wine, etc.
