Good Location, Good Snow Conditions
Food Quality/Price, lack of varied terrain, Bad Rentals
Went to Jack Frost for a 2-day trip. We stayed at a nearby inn. The location is very convenient for those coming up from Philly. The resort generally does a very good job of keeping its terrain in top shape, and it lived up to that reputation during our visit. The problem we did encounter is that Jack Frost get shit by high winds which tend to blow the snow off the mountain by late in the afternoon, so shoot for mornings when you visit.
Now for the downside. The price and quality of the food offered in the lodge was simply the worst I have ever experienced at any mountain. The staff in food services is unprofessional and will do anything they can to avoid helping you. The staff treated ketchup like a luxury, and no one seemed to know where they could find any to fill the empyt dispensers. If you visit here be ready to pony up a lot of money for a really lousy lunch if you want to eat on the mountain.
A problem most of the Penn resorts have is a lack of varied terrain, this shouldn't come as a suprise to anyone who has visited them. This isn't really something you can blame on Jack Frost, it's simply the restrictions of the surrounding mountains, which are closer to large hills.
Finally, one of the couples in my party had to rent skies, boots and poles. Even by rental standards the equiptment was lousy. I would recommend getting some rentals off the mountain.