We have rented a home in Duck the third week in August, and will be traveling from NY. Our arrival day is Sunday, but we plan on leaving Saturday afternoon (stopping overnight on the way). Would it be better to travel through PA via 81 (going through Maryland/Virginua) or via 476 (going through Delaware)? It appears that the Delaware route is shorter time wise (via Google Map). As we are arriving on a Sunday, will the traffic still be quite heavy during the day? Thank you for your assistance!