I will be traveling from Boston to Seattle, WA this summer with three kids ranging from 4-11. I will also be towing a camper and would like any suggestions on "Must See" stops along the way. I am thinking about Mount Rushmore, Hershey, PA, A cave or two in addition to any unique eating establishments (no food chains). I would like to eat family style food. I am a anti-McDonalds kind of a family.