Thanks for the info!

Regarding 13J, I hate having people behind me, must be some kind of weird phobia type thing that I can't really explain. And usually if there are open seats they tend to be at the back. I also had seat 10F on the same flight last year (not out of choice) and the IFE wasn't working (just that seat out of a full cabin!) which was horrible for a 12hr journey. I will take your advice though and move to 13F so I don't have to get up to let people out.