We're B list so only going for the evening. They're not my family (are DP's) so I've no strong feelings either way - hardly know the couple but still nice to be asked and all that.
However, teen daughter has been invited to a party (not a booze one) that she obviously wants to go to instead. Do I let her and risk married couple maybe feeling a little slighted or do I put my foot down in the name of Duty? WWYD?