Then we'll have 4 days to do anything with. We'll be staying in the city to celebrate the holiday with our two college-aged daughters. But afterwards, we wanted to do at least one day trip with our 9 yr. old; Hershey? Gettysburg? Lancaster? Mountains? (We're from Chicago so mountains are "cool"). Then back to Philly and maybe hit the Wyeth exhibit, see the "reproduction" Rodin's. Cheese steaks? We've been to the city before, and done the historical downtown with independence hall, etc.. Suggestions?