I'm at a (very) small conference today, my paper is the second one in the morning, and yes, I did finish its preparation in time.
And I finally figured out what made it so weird in preparation... it's mostly NESAT's fault. Because, when you come back from a place where you have been for a week and where somebody says "2/2 twill", everybody nods and goes "ok", or where you say "that sock from Coppergate", and the room goes "ah, that sock" - it is kind of hard to not feel weird when you prepare to explain in a paper how a hand-spindle works.
Plus I've only gone to international conferences during the last few years, and of course I did my papers in English - and today's little thing will be in German, and that also feels kind of weird.
I'm packing up now to head for the conference, and I'm trying to not feel weird.