I was on standby for a flight a few years back to LAX and was ran down to the gate, boarded, went to my seat and some pax had moved around to sit next to eachother. I was on my own so let them stay put, but ended up still standing on pushback!
Eventually i took a crew seat behind business class and was told after take off that there were no spare seats at all!! I spent the entire 11 hour flight on a crew seat (with a 3 hour break in the f-deck)! Was ok until I put my meal on the seat beside me then stood up to use the loo. Oops!!
Turns out someone was double booked into a seat and moved to my seat.
Oh the perks of staff travel, I couldnt complain and ended up having a laugh with the crew anyway!!!
If the crew have a passenger manifest, it should give all names in the correct location. Does anyone know how it appears if a seat is double booked??