HAPPENIN’ OTSEGO for SUNDAY, DECEMBER 17 Fly Creek Holiday Tree Lighting OPEN HOUSE—3-4 p.m. “Holiday Caroling and Tree Lighting.” All welcome for an open house followed at 4 p.m. by caroling and the lighting of the Fly Creek Fire Company tree at the intersection of State Route 28 and County Highway 26. Followed at 6 p.m. by a visit with Santa on the district fire truck. Fly Creek residents are invited to register so Santa can stop at their addresses to…