Disney’s transition from Halloween to Christmas is a high-fidelity logistical marvel that begins almost the second the final pumpkin is removed. At Walt Disney World, decorations typically begin appearing overnight between November 1 and November 2. Magic Kingdom is usually the first to see its high-fidelity holiday makeover, with the iconic giant Christmas tree on Main Street and festive garlands often installed in a single night. By the second week of November, usually around November 13 or 14, the holiday season officially kicks off across all four parks, meaning character meet-and-greets in holiday attire and seasonal entertainment have fully debuted. At Disneyland in California, the timeline is slightly different, with the official 2026 holiday season scheduled to begin around November 18, though decorations like the "snow" on Sleeping Beauty Castle appear in stages throughout early November. If you visit during the first week of November, you will likely witness a high-fidelity "hybrid" period where one park is fully festive while others are still in transition, providing a unique look at Disney's legendary decorating speed.