In a preemptive move, the orchestra director let us know that snow and ice would not prevent a rehearsal from happening.
One dreary Winter day in pre-Internet times, I walked down to the music building and saw this notice on the bulletin board: "Attention: University Philharmonic members: Today's rehearsal is not cancelled."
Getting the bass from the storage room to the rehearsal hall wasn't easy, but I managed to navigate the ice and snow without breaking any bones. I suspect, however, that in today's more litigious age, such a rehearsal probably would be cancelled.
