Originally Posted by
AviosTreasureHunter
I have swapped with my mother on CE before. I was J on LUX-LHR and she was Y. I gave her my ticket to enjoy J and I sat in Y. It appeared to be no issue for the crew.
Yes that would have been fine if the mother was there - the mother no showed. Another random passenger was in the seat she would have been in if she had not no showed.