Many couples who know they are having a contingent of children at their wedding worry about how to keep the children entertained during the course of the wedding day.
My husband and I had 7 children under 6 (2 of them were under 1) and two autistic children 16 or under at our wedding and I really did not notice any of them in a negative way at any point during the day. Most children are able to sit still and quiet for 20-30 minutes, which is the average duration of a wedding ceremony, after which time they are able to walk about and play during the welcome drinks and the pictures being taken.
The wedding breakfast is then a great time for the children as they get their food and can play with their parents and the other guests, and you really will be surprised what simple and completely inexpensive things can keep children entertained during the wedding breakfast, which is when most people worry children may be the most disruptive out of boredom.
Here is what my husband and I did to help keep our child and adult guests alike entertained.