Robbins Barstow added a narration track to the film in 1995.
"In July 1956, the five-member Barstow family of Wethersfield, Connecticut, won a free trip to newly-opened Disneyland in Anaheim, California, in a nationwide contest. This 30-minute amateur documentary film tells the fabulous story of their fun-filled, dream-come-true, family travel adventure, filmed on the scene at Walt Disney's 'Magic Kingdom' by Robbins Barstow." Archive.org
See Liz Coffey's essay "Disneyland Dream," written for the Library of Congress.
Library of Congress