Fun times. This happened to both my mother and I in the same week. She was in GPT, pulled of EV CRJ for another PAX. I was in DTW, pulled of OH CRJ for more gas.

And not the same situation, but I was forgotten about by an ATL gate agent who sent the flight out with plenty of empty seats. I got the 3rd flight to MDT after that.

I hope this doesn't happen too often, it's no fun.