Walt Disney spoiled the cast with perks like free admission to the Disneyland theme parks.
Dick Van Dyke—a.k.a Bert, the chimney sweep—was the biggest kid on the set. According to co-star Karen Dotrice, "He's just very, very silly. He'd stick things up his nose and do whatever it took to get us to laugh."
Mary Poppins earned five of the 13 Academy Awards it was nominated for in 1965. Julie Andrews also won a Golden Globe for Best Performance by an Actress in a Leading Role—Musical or Comedy. The Sherman Brothers were recognized with Grammys for Best Recording for Children and Best Original Score Written for a Motion Picture or Television.
In an effort to woo Andrews for the role, the Sherman Brothers were tasked with writing her a song that she would love. The writers struggled, but Robert Sherman's kids provided him with some great inspiration following their pain-free polio vaccinations. The polio medicine was placed on a sugar cube for the kids to eat like candy.
Author P.L. Travers was strongly opposed to selling the movie rights to her Mary Poppins books, but gave in to Disney after 20 years, primarily for financial reasons.
"Feed the Birds" was Disney's all-time favorite song. He would even request that Richard Sherman perform it for him from time to time.
It appears Travers wasn't a fan of the animated sequence when first seeing the script. "I cried when I saw it," she reportedly said. "I said, 'Oh, God, what have they done?'"
David Tomlinson not only portrayed Mr. Banks, but he also provided the voice of the talking parrot from Mary Poppins' umbrella.
The Sherman Brothers wrote and composed more than 30 songs for the Mary Poppins film. Only 17 songs made the final cut.
Because of how successful the Mary Poppins film was, Disney was able to expand W.E.D. Enterprises, a sector which focuses on animatronics. W.E.D. Enterprises is now known as Walt Disney Imagineering.