Hi Missy,
My partners sister got married 2 years ago, and kids came to the ceremony. We sat near the back as he was an usher, and on the same row as us there were 2 kids who crieded, shouted, jumped up and down all through the ceremony and neither of the adults said or did anything! We were so close to asking them to leave, but didnt know who they were or anything, but because of it, their ceremony was ruined and so was their wedding video!
Afterwards, a few people said te same as us, they wanted to ask them to leave but didnt as they were unsure who they were, but turns out that they were distant members of the grooms family, and both bride and groom desperately wanted them out of the church!