Originally Posted by
lhrsfo
This is the slight problem with the extra seat route - it will inevitably be shared with another person, even if you have bought it. You then have a choice whether to get irritated by this, or just accept it and enjoy the karma.
If I purchases 2x seats and was assigned middle+window.... I would sit in the middle, spill over to the window, and make it clear that BOTH seats are mine.
If the passenger in the aisle asks - I'd explain I paid for both seats, and thus I'm using both seats.