If I am allowing children to come to the wedding, how can I accommodate them in a way that's not disruptive for other guests?

Find fun ways to keep them occupied. You could have your floral designer create a piñata filled with inexpensive toys and/or candies or set up a children’s table with favors. If children are seated with parents, provide each with a coloring book and small box of crayons. Make sure, too, that your menu includes kid-friendly foods like chicken bites, little ravioli, or mini pizzas. You might also hire a baby-sitter or two to help out. Some reception sites provide a separate room where children can color, watch a movie, or just gather. In that case baby-sitters are a must. If providing a baby-sitter, inform parents on an enclosure with the invitation and on your wedding website, and tell them to inquire with you for more information, as some parents may wish to see references.