I wonder if other kids at the playground wandered into the shot, would the production company need them to sign releases? If so, producing a reality show must be a logistical PITA.
My kids love the show, and were playing "J&K plus 8" the other day. I had 8 kids at my house they all watch the show, so they came up with the idea. Have to admit- there is no silence with 8 kids. Not one moment. Everyone at my house behaved wonderfully, but I also didn't have 6 2yr olds....
As for Jon & Kate- I don't think I'd want to be related to them or friends with them, but I do love watching them on TV.