Put yourself in this scenario-
Childless married couple, your OH has invited a (single sex) group of friends to stay at your house to celebrate a friends birthday.
They suggest that you might want to not be in the house over the weekend as it may change the dynamic of the gathering and may be noisy/irritating for you.
They offer to book and pay for you to stay in an Air B&B in the nearest city centre for 2 nights.
Would you be offended by the suggestion?