A good friend of mine always used to walk the evacuation routes before he'd even unpacked his bags. His colleagues called him nuts....until a hotel caught fire a week after he'd stayed there.
Personally, I feel safer if there are sprinklers in addition to the normal fire detection equipment.
btw, some colleagues of mine were in a bar and noticed all the detectors had the yellow plastic installation covers still on. They decided to tell the manager that his system, which was brand new and cost thousands, was basically useless. The manager didn't even realise and was on the phone immediately to the installers.