When does your resort plan on opening for the winter? March 22, 2024 00:39 Updated Boston Mills/Brandywine is slated to open Dec. 16 for the season. Opening day will be weather dependent. Related articles Is my lift ticket transferable? Where do I search online or call to review my vacation plans? Do you offer an early bird "First-Tracks" Program Do I need a reservation? Where can Winter Activities in Boston Mills and Brandywine be viewed online?