I once attended a wedding with the same set up. It was brilliant. The kids loved it as did the adults.My minor boast is that I was told by more than one guest at my wedding that it was the best they’d been to for years because we invited kids but provided entertainment for them in a separate room. So they didn’t have to worry about childcare or having the kids to think about. That was accidental though - I hadn’t realised it would hit the spot like that.
I didn't have mine with me because they were adults by then, but I remember thinking what a great idea.