The OP lives in a block of flats, so yes, if they are standing outside her home, it’s in a communal space.
Then on that technicality any way this is done is a communal space - unless someone lives on their own in the middle of nowhere with no neighbours
Yes. If you live in a row of terraces and you invite Father Christmas, Elsa and Anna to stand in the street and entertain your children, and you don’t expect other children in neighbouring houses to see and be interested in that, you’re being unreasonable.
Erm, hang on a minute - that's NOT what this thread is about. OP doesn't "expect them not to see and be interested" she expects them not to be invited over to her family experience. Which is the very thing you've moaned on about for 100 posts. Why are you making out she doesn't expect anyone to see Santa? She's never said that.
It is obviously different if they quickly arrive and go inside, or they arrive and go into a private garden. That isn’t rubbing other kids’ noses in it.
You what?! That's worse! Kids will probably sit thinking "oh he's coming in my house next" and then watch him leave and get in his car.
It's very odd how you have a very specific set of criteria is in what constitutes being a horrible person/mean neighbour, and the only circumstances in the whole entire possibility of things that could happen in the world in which you think this is exactly what the OP is doing. Apparently if one tiny thing changed, it's acceptable and OP goes back to being a nice neighbour. Bit odd don't you think?