On a recent flight from JFK to LAX a pax took my seat before I even boarded. I knew he took it because my son was in the middle seat. I was late boarding because I was waiting for a last min upgrade to FC. I was expecting when I was upgraded my son would move from the middle seat into the aisle seat and have a middle free. Not so. Some experienced traveler kept track of who was waiting for FC upgrades and took a chance that those seats would be free. This is nothing new. People did it all the time in the past. They even do it before the plane is fully loaded on spec.

Thanks for posting this issue because now I think I will try this next time out

Short