The in-laws are coming to stay for a week or two so what to serve? Let's say the mother doesn't drink at all and tisk-tisk over you having liquor out in the open in your (yours I said) house. The father claims to only drink socially (except when his wife isn't watching) then invariably helps himself to your most expensive label. The brother in law claims he doesn't have a drinking problem because he only drinks "the good stuff" but really can't tell the difference between Jack Black and Beam Eight.
So what do you do? My solution is get some empties with recognizable labels (Jack, Makers, etc.) and fill 'em with cheap hooch.