I have to tell you that you have chosen one of the worst routes for non reving... the planes are always full and not many flights... but dont worry... staff in London know very well how to make it easy.

Good luck and tell the story when you are back...

By the way... if you fly with a one world alliance airline, probably BA or QF, ask them for the one world standby priority when you check-in, as you are a JL employee. It always helps getting you faster on a plane!

and remember to be patient.