I just recently got engaged. The wedding isn't going to be until March of 2012, but I started making a rough estimate of people I would like to be on the guest list. We are trying to keep it small, about 100 people. My fiancé has 3 nieces that I would love to have there. However, just because we want them there, does that mean I have to invite everyone's kids? Some of them I would really prefer not be there because of behavior issues. And several members of his family have 3 or more kids. Also, if everyone's kids are going to be there, it really takes a big chunk out of my guest list. What is the right thing to do in this case?