LogFAQs > #907216594

The author of Mary Poppins (P. L. Travers) supposedly didn't like the film.

https://en.wikipedia.org/wiki/P._L._Travers#Disney_version

Travers was an adviser in the production, but she disapproved of the Poppins character in its Disney version, with harsher aspects diluted; she felt ambivalent about the music; and she so hated the use of animation that she ruled out any further adaptations of the series.[18] She received no invitation to the film's star-studded premire until she "embarrassed a Disney executive into extending one". At the after-party, she said loudly "We have a long way to go, Disney'." Disney replied, "Pamela, the ship has sailed", and walked away.[19]

Travers so disliked the Disney adaptation and the way she felt she had been treated during the production that when producer Cameron Mackintosh approached her years later about making the British stage musical she acquiesced only on conditions that English-born writers alone and no one from the original film production was to be directly involved.[20][21] This specifically excluded the Sherman Brothers from writing additional songs for the production. However, original songs and other aspects from the 1964 film were allowed to be incorporated into the production.[22] These points were even stipulated in her last will and testament.[23][24][25]

In a 1977 interview Travers remarked, "I've seen it once or twice, and I've learned to live with it. It's glamorous and it's a good film on its own level, but I don't think it is very like my books."[26]

You're probably only talking about music, but fuck it.