Main parking lots are plowed. Half Way House parking is generally limited to plowed spots at the end of the toll road. I suspect there would not be any problem even parking in the parking lot at the HWH as there was only about 3-4" of sleet and that has melted down significantly. Likewise you can most likely still get into Marlboro and Dublin especially if you have 4 wheel drive. Recommend Hillsounds or micros for the trails as there is a good coating of snow and ice. I wore beat up ole pair of micros all day and had no trouble. Lots of poor footing though because of traffic yesterday in slushy conditions and freeze over night.