The attempted insult of Quentin in Spanish by calling him "Ese" is completely out of place, since that slang term is indigenous to northern Mexico and southern California. It would never be be uttered by Miami's Spanish speakers who are almost exclusively of Cuban, Puerto Rican, and South American background, even if they are from a lower socioeconomic background.
Christian is shown taking his half-brother to the campus of the University of Miami. The campus shown is not UM nor looks anything remotely like UM.