Originally Posted by Antipode

I've had it happen at IAD, where the last IAD-FRA of the day was on rolling delays that ended up lasting about 3 hours. Most of the staff went home, I think, and they put away all the food/drinks, but when I returned to the club (which was just across from the gate for that flight) after they announced the delay at the gate, they unexpectedly let me in despite it being past the posted hours. There were a number of other people there, too, waiting out the delay, and they let us stay there until the flight left.