The Montauk Chamber of Commerce's 40th Fall Festival, two days of food, live music, and fun for the kids, will be held on the downtown green on Saturday and Sunday from 11 a.m. to 5 p.m. At the Montauk Lighthouse, the Kings of the Coast Pirates will put on shows filled with mayhem and misadventure at 12:30 and 2:30 p.m. on Saturday and Sunday.