I boarded a SW flight home, in NC to PHL. Well, the flight originated in Orlando. Only a handful of people got off in NC. We had low "A" boarding passes, but the flight was nearly full when we boarded. (we might have all been As getting on, actually!) I don't think we even sat together (short flight, no big deal).
The WORST part was those Orlando passengers were ALL settled in and spread out. They did NOT want to give up their "extra space" if they did not have to. They had their coats and stuff on the empty seats and avoided all eye contact, lol. Couples and groups of 2 seemed to be counting on the few empty middle seats staying unoccupied. When we went to sit in them, one of the pair would shift to the middle seat.