what to do in east hampton in the winter?
['Scheduled Trail Walks.', 'Bike to the Beaches and Bays.', 'Go Ice Skating or Play Indoor Tennis.', 'Visit Montauk Lighthouse and Cedar Point Park.', 'Celebrate Harborfrost in Sag Harbor.', 'Go to Gingerbread University (Riverhead)', 'Visit the Guild Hall Museum.']