You flip the switch down and turn off the power. The first thing you
realize is that it's really dark. Then you realize the music has stopped.
Next you realize you have no idea what you were hoping to do. After a little
hesitation, the noble part of you flips the switch back up.

Nothing happens

Angry voices are approaching and the less noble part of you decides to escape
Feeling your way around an bumping into people, you eventually manange to
leave the building and blend with the dispirited masses leaving the theater

You failed to meet Rob, you didn't hear the concert, and you even ruined the
concert for everyone else--even Rob Darling himself.

Happy?