I happen to be a very unlucky person in regards to the fire alarm. Most halls don't have them very often, and they're normally quite short.
However, I said i'm really unlucky. Ours goes off more than normal (compared to all the other halls on campus) and its really starting to bother us.
A couple of weeks ago, it went off every night between 3 and 4.30 for a week. it went off again a couple of days ago. It bothers me when it goes off soo much, so much so this is why i'm still awake. However, this is unusual for this to happen.
With our university, i'm not sure about any others, there is a set fine for not evacuating. however, I don't believe anyone has been fined and not everyone goes outside.