No, they should be back on schedule, they just nudged it a day back for Christmas week. They like our house because our workman once made them all a cup of tea (a feat never repeated by me, ha, but they were stuck behind a car or something).
They do sometimes get stuck, the road below ours is narrow and bendy is significantly overparked, and must be a nightmare to get a lorry through, it's hard enough in a car (apparently they take off a couple of wing-mirrors every week). But generally, I can still hear them if they're within a mile or so, I live in a steep sided valley and sounds, like the locals, don't escape easily. Not even of a hint on the breeze today.
I'll be most annoyed if they don't come on the grounds that as I switched my bedside light* off about 12.45am my wife uttered the words 'did you put the bin out?' which of course, neither of us had (which, further of course, she knew), and which further further of course, involved ian going downstairs and wheeling the damn thing to the bottom of the drive in the sinister dark. It's quite spooky with no streetlights (and our lights go off at half-midnight).
*strictly speaking it switches itself off, it's one of those sunset/dawn clocks.