I'm all for airport bars being open around the clock. It's always tea time somewhere.
Once, I and two band buddies stayed behind to take in some sites and flew back to re-join the band later. One guy made the mistake of thinking he could save his leftover beer in his checked baggage. Big mistake ... lots of shaking ... lower air pressure ... beer soaked clothes on arrival. Always throw left over beer away or give it to a drunk, but never pack into your bags.