Boarding continued...
Sometimes we have to substitute one kind (or configuration) of aircraft for another (see CHANGES). When this happens everybody gets upset because nobody has the seat they thought they had and you may or may not be seated beside the person you thought you would be seated with. When we up-gauge, everyone is accommodated somewhere. When we downgauge, a bunch of people will typically be left behind. We are particularly looking forward to downgauges from the 77H to 77W where 100 people might get left behind, but those who do get on the switched aircraft will be thrilled. We take particular pleasure in switching 763's for 321's since most Y passengers are accommodated but people in J get to experience our lovely Executive seating instead of those troublesome pods and we have the pleasure of bumping back four bottom-feeders who thought they had upgraded back to where they belong.
One reason we'll bump you for a super-status passenger is the super-status passenger paid through the nose for that last minute ticket, so we can easily afford a couple of hundred bucks coupon or 5% off discount when we inconvenience you.