I watched this growing up, and it’s part of why I love movies that blend live action and animation (see Who Framed Roger Rabbit or The Incredible Mr. Limpet). Movies don’t really do this anymore, if needed there is 3D animation for characters that can’t be actors.
Anyway, I also really like Angela Lansbury, and this is a young Angela. Also David Tomlinson is a treasure and really should have been in more Disney movies. There is a lot of nostalgia here for me, and so that is my bias here. Fair warning.
The Isle of Naboombu is a great sequence, and I love the ending where she finalizes the last spell to fight off the invaders (this movie takes place in WWII fyi). And, of course, since it’s Disney there’s a variety of lovely songs and dances to go along with the action.