What was released to the public first, Magic Kingdom or Escape to Witch Mountain?
Magic Kingdom: Magic Kingdom is a theme park at the Walt Disney World Resort in Bay Lake, Florida, near Orlando. Magic Kingdom:  Owned and operated by The Walt Disney Company through its Parks and Resorts division, the park opened on October 1, 1971, as the first of four theme parks at the resort. Escape to Witch Mountain (1975 film): Escape to Witch Mountain is a 1975 American fantasy-children's film, adapted from the science fiction novel written by Alexander H. Key in 1968.
Escape to Witch Mountain