Originally Posted by
Brighton Line
You don't know if they are empty, B6 might have sold tickets without seat assignments. They also upgrade Mosaics then the unassigned ticketed pax get non-EMS seats.
I don't think they voluntarily do this. I think they do it if a Mosaic asks or checks in at the counter but I don't think they proactively upgrade just to assign non-EMS seats to unassigned pax.