This is the first time Quoodles takes over delivering Mouseketools (or in her case, Quoodlestools) to her friends instead of Toodles.
”Minnie-rella” is based on Cinderella.
This episode aired on Valentine’s Day.
Ironically, Russi Taylor voiced Minnie Mouse (who plays the part of Cinderella) and the Fairy Godmother (played by Clarabelle Cow) in the Cinderella sequels and many of her appearances.
The scene where Clarabelle Cow tries to make Minnie's shoes are slippers, one of the other shoes that is Minnie wears flippers (abracadabra swim) has become an upcoming meme known as "Minnie-Duck-Swim-Rella". 
Prince Mickey makes an entrance.
Prince Mickey welcomes everyone to his castle.
May I have this dance?
Prince Mickey and Minnie-rella dancing together
Prince Mickey found his princess
It's 12 o'clock!
Minnierella runs away
Oh no! She lost her slipper!
Prince Mickey was worried
Pluto found the slipper
Prince Mickey holding the glass slipper
Prince Mickey and Minnie-rella with her glass slipper
Putting on the Glass Slipper
The glass slipper fits!
Minnie gesturing her feet. Her right foot is in the glass slipper
Falling in love
Prince Mickey and Princess Minnie-rella will live happily ever after