We have a sandwich shop that runs 24 hrs from Tuesday morning until Saturday night. I've picked up late night supper there and seen people playing cards, etc and just generally hanging out for long stretches.
When I was younger my buddies and I went to a 24 hr diner and played magic into the wee hrs, occasionally leaving only when the earliest breakfast crowd started to roll in.
I know. I keep the old SUV around for murder night because it barely has Bluetooth