A hidden thank you letter
It’s a heartfelt Easter egg that has nothing to do with previous Disney movies. For example, we see adoption papers in the famous scene in which Lilo and her big sister go to the shelter to adopt a dog.
There isn’t just a bunch of nonsense scrawled on the paper. Everyone who contributed to the film’s creation receives a heartfelt thank you in this letter. Everyone was taken aback because the text was written by the directors and producers.