There's a fantastic story of Henry Kissinger working in free time as a Disneyland Cast Member, and his involvement with the creation of EPCOT, in episode 352 of the Disney Dish podcast.
This URL or search in your podcast app https://podcasts.jimhillmedia.com/show/the-disney-dish-with-jim-hill/disney-dish-dish-episode-352-when-henry-kissinger-got-stuck-on-the-matterhorn/