We went for brunch with friends and their three children.  A wait of an hour to receive our food was hard on the children making them a bit rowdy.  Fortunately the people sitting near them never looked our way so I guess they weren't bothered by it.
Had we known there was an outside area I think we would have opted for that.  I think there was space for the kids to get up and run around a bit as there didn't appear to be many people outside.