Preakness Party with the Sum Cassel Vineyards of Hershey Hummelstown, South Central PA Starts: May 19, 2018 03:00 PM Ends: May 19, 2018 06:00 PM Share Facebook Twitter Email Enjoy some great music and Maryland Crabs from south of the border; that would be the Mason Dixon Border! We’ll drink some wine, make some interesting frozen drinks and celebrate the running of the Preakness at Pimlico.