not to be snide but it isn't Apples job to entertain your kids. If they are too young to handle the wait they should be left at home with Mom, Granny, a babysitter or such
I've seen so many people drop their kids off at the kids table at the apple store in malls while they look around, leaving them to yell and run around. I've witnessed once a kid running into a genius who almost dropped a customer's iPad on the ground as well. Thankfully he had lightning fast knee grip reflexes but I can only imagine what would have happened.
I can't imagine all the sticky fingers touching iOS devices are good for other children as well.