I remember.
So, I'm just planning ahead for my own ease as much as anything else.
The good news is I watched maybe 30 videos of appenzellers on YouTube last night and I didn't hear anything too loud. And I reached out to someone on byc who keeps them and she said one of hers makes loud screeches like a parrot, while the others are quiet. I'd like more info from the breeder (maybe her flock is quiet?) and then if needs be, I'll discuss it with the neighbours. They might not mind, especially if the kids get to see the chicks. There's already a loud cockatoo in a cage over the back fences and quite loud dogs further along.