I recently boarded a plane only to find someone in my seat in economy, and it turns out that we both had boarding passes with the same seat number. So, I walked to the nearest available seat, which happened to be business class, and sat down. Within 60 seconds an FA comes up to me... and asks me if I would like something to drink! Needless to say, I had a pleasant flight.

Has anyone else tried this? Did anyone notice?

--Jon