Harry Potter New York Free Halloween Treats October 28 - 31 🪄 Head to harrypotterny dressed as your favorite character from the Wizarding World for a FREE Halloween treat! Visit the Butterbeer Bar from October 28 - 31 at 935 Broadway in costume to redeem. They have a few different cookie designs to choose from. The store also has a ton of great photo opps in your Harry Potter costumes! Store hours: 9am-9pm (Sundays until 7pm). Happy Halloween! Share with a Harry Potter fan! #nycforfree #harrypotter #harrypotterfan #harrypotterny #harrypotterstore #nychalloween #halloween #nyctodo #freebies