Originally Posted by
Knobbgb
I'm not aware that there's any requirement to have somebody sat in each emergency exit row (although I guess it would make sense if there were, so I see your point). I've been on several A3 flight where at least one set of three was totally empty and one I remember in particular where I was the only person in any of the 12 exit-row seats.
Might be airline-specific, but at least BA and Wizz have this policy - I was requested to move to Emergency Exits on both carriers.