I have a very large family and my fiancee has an averaged sized one, so combined we easily had 100 guests before adding any of our own friends or parents' friends. To cut down I proposed an 18+ rule (which other members of my family have already done for their weddings). My fiancee agreed, since that took off about 25 people from our list and neither of us was keen on the idea of young kids running around.
So we made an early guest list and worked our budget around it. When I started compiling addresses I noticed he/his family had added a few cousins. I asked him about it and he said he made it clear to his family that we weren't having anyone under 18. Being that he is the oldest on his side of the family (at 24) I was a little worried since if my extended family saw other kids there they would be upset that their own children had not been invited. I decided to look for them on Facebook to see if they would in fact be 18 within the next year. I found at least 3 of them who are 15 or younger. Granted they aren't 4 and won't be running wild during the ceremony, but I'm hurt that my fiancee and or his family ignored a restriction that we all agreed upon a month ago.
Do I stand my ground and tell them to take the kids off or just suck it up and invite all of my younger family members also?