Doh! Of course they don't - Sorry!
Still think it might be worth trying to get an empty seat next to you.
You also have to consider the pax next to you. Although you can move the arm-rest to give yourself more space, you are also taking space away from your fellow pax. I still think trying to book you and a companion two seats with an empty seat between you is the best option.
Good luck.
Last edited by wowzz; 10th October 2013 at 08:00.