We are having an evening downtown wedding next year which my parents are hosting. My fiancé and I chose a smaller venue (holds 150 MAX) on the assumption we are having "no kids". My mom is one of 7, which means on one side of my family I have 23 cousins. FIRST COUSINS. Because of the head count, we decided to keep the guest list at 21+, so many of my first cousins will not be invited. My fiancé has a very small family... one sister, one niece, 2 cousins (his age), and a second cousin who will be 6. My mother in law does not understand why we cannot make an exception to invite his SECOND cousin. My rationale is that it wouldn't be fair to invite some kids, and not all; therefore, we chose to invite none. She has been throwing screaming fits, crying and hollering, saying that my family is horrible for not wanting to include his second cousin. We have continuously stated that it is not fair to make exceptions for certain children, as others would be upset. Also, our venue is not kid-friendly. There is just not enough space. She says that she is going to have this little one show up at the wedding and doesn't care what we think... I do not know how to get through to her. I think it she is being extremely disrespectful of our wishes. Because of her behavior, now my fiancé is changing his opinion and saying, well maybe we should just make an exception. I don't think I should have to compromise on this!! Please help!!! This debacle has been going on for a year now.