On that note, I encountered a real ornery cuss at the UA IAD lounge, not that it has a sterling reputation for anything.
Nevertheless, I still had about 40 minutes before boarding...as a result of the lounge dragon's intransigence, I just zoomed back to the TK lounge for a tea and rice pudding.

(she said "ITA isn't in *A, therefore you can't come in). No amount of electronic proof would've convinced her.