There’s a certain shift in Rockland during Pies on Parade. Doors open wide. Conversations spill onto the sidewalks. Strangers become neighbors over shared bites of something warm and flaky. Visitors arrive with maps in hand and leave with blueberry on their sleeves — and plans to come back next year. This year, Tides to Pines is proudly joining the tradition — or, as we’re calling it for the day, Tides...