Get in the Halloween spirit, put on your costumes and head to the park for live music, spooky stories, crafts, pumpkin carving demonstrations and a parade. Stay until twilight to watch fifty pumpkins float across the Harlem Meer. Try your luck and enter to get your pumpkin a coveted spot in the flotilla. See website for rules and registration. This year will even include a live bat encounter presentations by the Organization for Bat Conservation.