[Rob!]

It’s never bothered them that much before. They’ve had non Christmassy episodes before that have just been established as taking part on Christmas with a tinsel joke or something and then just got on with the plot.
Also the episode synopsis for it is spoilery.

Spoiler:

It says all the companions “return home” so clearly they all survive the finale.

[Marsh.]

Originally Posted by Rob!

They’ve had non Christmassy episodes before that have just been established as taking part on Christmas with a tinsel joke or something and then just got on with the plot.

Yeah, that's what I mean though, now they don't feel obliged to have Christmas trees in the background and set it at Christmas at all.

Or include a scene with snow just because like has happened a couple of times.