Really the only bad luck round con time happened last year. Got to the hotel on Thursday to help set up. By the time we finished, there were no beds left in the room, so I decided to attempt to sleep in the tub (door locked so noone snuck in and turned on the shower). I finally got situated and reasonably comfortable and started to doze off, when our next door neighbors got to their room and were extremely loud (vents go straight through the rooms, can't see anything thankfully, but you hear everything). I was promptly roused and tried to tune them out and they even started to calm down. It was almost working...
Until the tub started to flood. Water seeped up from the drain and by this time (my only solace is that, judging by the sounds of their reactions, it happened in their bathroom too), it was four o clock, so I decided to forgo trying to sleep in favor of hanging out with the start of the registration line. So Friday was spent dead tired since I was sick and hadn't been sleeping anyway.