first of all i want to say that miss brooklynn prince deserves ALL THE AWARDS!!!!! i can't wait to see what she does next!!! 
second of all, this movie shouldn't be considered a "niche" movie. it should be considered as a movie that people with good taste will appreciate and only people with no taste will hate.
everything about The Florida Project - be it the extremely pleasing aesthetics, the STUNNING acting, or the Disneyland theme - is award worthy! 
And the ending? A MASTERPIECE!