Thanks all. Booked spa treatments this morning - 28 days out and they only had 4 slots, which the agent described as "lots of availability".

I'm not going to look at the menu because I don't want to pre-plan everything - there needs to be something left to look forward to!

Shame about the chocolates - I thought from reading other TRs that you got a small box each/per couple, which struck me as quite a premium thing to do - even if a box of those chocolates probably only costs BA £5. But no - I was wrong - one chocolate each from a box that has been passed around the cabin. Far more in keeping with BA's "premium" experience.....