D.B.
All I can think of is McDonald's - the food isn't top notch but the kids can run around. You can't bring in other food, but you can sit there for hours without eating if that's what it comes to. You can move tables together sometimes so the parents can all sit together. I think the place spaces are for kids in just those age ranges. If you have some 10 and 12 year olds to go "rescue" a 3 year old who gets a little disoriented in the climbing structures, no parents will have to climb in! There are enough places with visual contact with the parents that the little ones usually have a ball and don't miss you at all. There is one in Westboro next to WalMart and one in Worcester on Route 20 I think. You could probably Google them, or those in the area will know what's close. i don't know what town you live in.