This is a very strange parody, as it is a parody for a movie, which doesn't exist anymore, as Coppola left the project, as it is, in the first place, parody on Coppola, however it is a parody on Disney's movie either, even though a Coppola's movie is from universal. And, it has a movie stars it in, which raises the bar. Participation of such actors definitely affected the success, as they are adorable.
Soo, what we have: Evan Peters as a typical dumb-mannish type prince, but still charming. AnnaSophie Robb as a cutest mermaid in the world. A tonnes of references on Coppola's work and director style, some funny and some just nice, some used as a jest and some as... honor? AnnaSophie's voice over. AnnaSophie's feet. "Part of your world" cover, which i found so much pleasing.
there will be no movie from Coppola, so at least we have this parody version perfect on its own
