I am DREADING IT.
It doesn't matter what time you go to our local Tesco (and it's a big one, so it's open 24 hours), it's heaving. I've been there at 11pm before and still had to queue for a good 10 minutes at the check-out. It also seems to turn even the sweetest, most polite people into rude, obnoxious bastards who WILL ram you with their trolley to get the last bag of parsnips before you. God only knows what it's going to be like this close to Christmas.
I'm sure the Christmas Spirit will be in short supply...