Just been to my sons Easter service in church. The children were trying their best to put on a beautiful performance. A sibling in the middle of the church was screaming and driving the noisiest, most clattery truck up and down the stone floor. So noisy that no one could hear the children's play and special Easter prayers that they'd written. When my two were toddlers I would have either stood as far back as possible or stepped outside until they calmed down.
TBH I don't remember having to do either of these things as they both knew how to behave in church. I always took a large bag of snacks and quiet toys. The refusal of other parents to show some respect to the other children is one thing I won't miss about primary school when mine go to secondary.