By Kirk O’Neil A number of Walt Disney theme parks have major plans for their anniversaries. Walt Disney (DIS) – Get Walt Disney Company Report theme parks love to celebrate anniversaries. In fact, two of its theme park complexes — Disney World in Florida and Disneyland Paris — are currently celebrating major anniversaries. Disney World, which opened on Oct. 1, 1971, began observing its 50th anniversary in its four parks — Magic Kingdom, Epcot, Hollywood Studios, and Animal Kingdom –on Oct. 1. The celebration will continue through March 2023. Disneyland Paris, which opened April 12, 1992, …