While I have had to get up and exit the premises in the middle of the night a few times as a result of fire alarms, they have always been false alarms. The most interesting time was when I had to collect my family and exit to the parking lot at 4am due to a fire alarm that turned out to have gone off due to a broken water main. It turns out that if the water main breaks, that means that should a fire occur, there won't be sufficient water to put it out and the pressure drop in the water lines to the sprinklers actually causes the alarm to go off. So while all the guests were evacuated, those staying in first floor rooms were getting their rooms flooded at the same time. Those guests were compensated.