I think that has a huge amount to do with why that last line is so hysterical: all the tension of the last scene is suddenly dissipated and the sense of release is double what it would have been otherwise, so . . . no, I think it was an excellent choice to jump from that fic to this one :-)
I so didn’t think about that – you’re always so good at pointing out these things that seem obvious as soon as I read them. :) The more I think about it, the more excellent a choice it seems. Not least since there was the beautiful poetic River/Doctor-ness from ‘Waters’ echoing through this piece, “domestic” as it was. (Hello, layers!)

It is ridiculously old fashioned, and therefore it had to go in Eleven's mouth.

It’s so funny in context (‘Fire?! Whoa, nelly!’), and I heard it in the most ridiculous posh English accent.

Pity it's ninety degrees out.
Ice tea?

I think this is my chance to be Roald Dahl; it's a real treat to write!
I tried so hard to remember which book this fic reminded me of, and it might have been one of Roald Dahl’s, actually. ‘Matilda’, maybe? If I’m not getting them confused.

And they all pretty much boil down to getting the rhythms right anyway.
You make it sound so easy. :) No, but you’re right, again, of course.