Originally Posted by LHWolf
My experience (several times) is, that there is no problem at all to swap seats (why should it be?). For the crew it is the same. Just inform them.
I do not see any reason why they should swap you back.
Thanks a lot for the info -- I will follow your advice. Not that I cannot think of any reason why they might want to swap us back

but if it worked for you, it will probably work for me.
While we are at it: will we be able to take Oldthinker the Junior to F lounges (or to FCT in FRA) as a guest accompanying two F passengers?