Ok, so last night I spent most of the evening sorting out the front/spare room and making the (quite expensive) sofa bed up so that Fil and SMil have a nice room to sleep in ove the xmas break.
Tonight they arrive and they promptly fold the sofa bed away and begin the pump up their own double mattress.
In fairness, the sofabed is not quite a double (just a little smaller than a double) but I think it is fucking rude to put the bed away (upon which I had laid towels and made up with lovely linen) and blow up their own - especially when they are only staying for 2 nights and then going home...
AIBU to think they are being unbelievably rude to do bring their own blow up bed when a perfectly adequate (and actually very comforatble) alternative was waiting for them???