Hey everyone!! We are planning an ADULT ONLY wedding with the only exception being my little sister who will be 6 and my fiances niece who will only be 18 months old. I have a family member that is very upset that their child cannot come because they won't be able to get a sitter. It's a holiday weekend.. it's a cousin on my fiances side. NONE of my cousins are coming. NOT ONE. And this person is extremely upset with us and causing a fight with the family.. any advice?