Hiyas
Thanks to nearly all the replies.
For the record I'm not fat,Freddie flintoff is no bigger than me!!
The original question of the upgrade has been answered for us as our flight has no WT+ seats in a group of 4 left.
I think given my daughter being only 8 I shall do what I've always done is sit next to her and if I need to stretch my legs use the aisle. It's the leg issue that causes the most discomfort.
Seriously though thanks for the comments I do appreciate them