Any one of a number of "walk up - stand and snack" joints along Calle Ocho in Miami are well worth a stop - or several stops. I've never been a fan of the "Medianoche" (smaller and without the crusty bread -like a bollilo baguette at its best) than a real Cuban sandwich. On the other hand, I'm addicted to the coffee and guava empenadas.
There used to be a small lunch counter, likely gone in reconstruction, between terminals at MIA, which could revive the addicted traveler.
Last night we had membrillo (quince) empanadas and Vietnamese iced coffee, bicultural excess excessively good!