Only ideas I can think of are bus trips from buckmans ski shop. www.buckmans.com. You could take a bus from Philly to King of Prussia Mall or where ever they meet up for bus trips. They don't have the the bus trips posted yet so keep your eye out. The trips go all over the place in new england and PA.
I have heard of people taking the R5 train outside the city to buses up to Quakertown.
I would email Blue and see what they know, because that is a tough one. Blue should invest in a bus that runs from Philly on Saturday and Sundays. It would be packed.