Book entertainment for the children. Adults only weddings can cause massive disagreements in families, with relatives sometimes not speaking for months afterwards. But, tired frazzled young children can definitely put a dampner on everyone's enjoyment. A simple way to solve the problem is with children specific entertainment and activities, something that can happen in the main room (so that the parents don't have to worry about the children disappearing off elsewhere), but also something that's quiet and calm. Yes, the disco is great, and the little children doing twirls are lovely, but a wedding is a very long day for children, so a quiet and calm activity, that they can pop in and out of whenever they want through the day just to have a bit of quiet time, benefits not just you, but also your guests as everyone gets the best benefits of a family wedding without anyone feeling left out.