Need to solve a potential argument!
My DS and his partner are coming to stay for 4 days on Friday (Friday afternoon until Monday morning) I haven't seen him since last August as he lives 5 hours away and because of covid restrictions etc.
My two nieces are also coming to stay (11 and 9) for the weekend, our house is 3 bed and the box room is now an office, the spare room used to be DS’ room.
I knew about DS and his partner coming first but I agreed to my nieces coming as my sister will be busy this weekend.
Who should sleep on the air mattress?