I know this is far too early to think about these sort of things.
Harrods have started an online booking service for Father Christmas this year to try and avoid long queues.
If anyone else wants to go it might be worth booking now before popular dates get full. I have heard its good but friends who have gone in the past have had to queue for ages which has
put me off.
Look at websales.omniticket.com/hod/index.cfm?action=FLEX,