I suspect I might BU but....
We don't get on with MIL and partner that well. (Tbh she's been a complete cow to me but that's another story).
They live 6hrs away so don't see them that much but it always involves an overnight stay.
They are coming to ours for Christmas. We invited them for Christmas Eve, day and Boxing Day.
They've just emailed to say they will be arriving 23rd to avoid traffic and so that they can spend the whole day with us on Christmas Eve.
We are not doing anything else but I hate spending Christmas with them and the thought of three whole days in our small house is horrible.
I had planned a quiet morning on Christmas Eve doing some cooking prep making gingerbread, nothing we can't do if they are here but it's just not the same!
AIBU to invent a prior arrangement Christmas Eve morning?