Have just had my very tearful cousin on the phone. She gets married this September, fiancé's step sister is invited to the wedding, with her husband, and they have a little boy. The venue is a lovely but rather formal restaurant and they've said verbally that it's a no-kids do. The invitations haven't gone out yet, just Save The Date cards. My cousin's fiancé told his SS that children weren't allowed and that he hoped she would understand. Well the SS rang the venue who said they didn't have a no children rule, and then rang my cousin and her fiancé and got really upset, saying they shouldn't have lied, they're starting their marriage with a lie, why can't she bring her boy, etc.
I think they could have handled it better but that SS is incredibly rude checking up on them and trying to force their hand. She says they won't go unless she can bring her son.
Unreasonable?