Originally Posted by
demue
Definitely possible, just one should not expect the request to be accommodated and be pleasantly surprised if it does work out. All depends. Being gracious if declined is also important in my book. I have seen folks being unsuccessful in seat change requests and getting worked up and nasty about the fact that the other person declined to move. YMMV.
Personally I think it's quite crass to ask someone to give up a seat without some gesture in return. I've never done it but, in the event I need to do it, I'd get a bottle of wine beforehand from duty-free, and offer as a gesture of thanks. And if they decline then, well, we have an extra bottle to drink during our holidays!