I’ve seen kids at weddings. Hell, I’ve been a kid at weddings. It was generally a bad experience for everyone.
Bored. Hungry. Thirsty. Where’s the toilet? I wanna play over there. Not allowed to touch this and that. Don’t run around. Don’t yell. Stop doing rude things. Don’t cry. Barf. Sleepy. Who gave them alcohol? I wanna go home! Stop crying. Etc and so on.
Kids and weddings rarely mix well, often making it a burdensome experience for everyone, mostly for the kids.