While I did have some kids at my wedding they were all family. I invited a coworker who had two preschoolers. I did invite her husband but not her kids. After she got the invitation she asked me if I could clarify that her kids were not invited because it was the first wedding she got invited to after having kids. I nicely explained that I just couldn't invite all the kids. Suddenly she started jumping out up and down happily yelling. It was a Sunday night wedding and her mom had already told her that her kids were not invited and the mother would keep them overnight. Her husband promised to be a designated driver so it was the first time in a few years she could go out without the kids and have a drink. She thanked me many times both before and after the wedding.
I also had another friend with a 12 year old son. I was asked if he could come to the ceremony (he wanted to see a Jewish wedding). It worked out well in that I asked if he would hang out in one of our hotel rooms and possibly watch my young nephew if needed. He much preferred that to a reception and asked if he could have McDonalds which was near the hotel so it was perfect.
I also had another friend with a 12 year old son. I was asked if he could come to the ceremony (he wanted to see a Jewish wedding). It worked out well in that I asked if he would hang out in one of our hotel rooms and possibly watch my young nephew if needed. He much preferred that to a reception and asked if he could have McDonalds which was near the hotel so it was perfect.