Since your cruise will probably consist of one endlessbuffet for the entire trip, one could only suppose thatyou want to do this as a training exercise. Try Nemo'saround the corner from Joe's Stone Crab. A trencherman's paradise--breakfast for champions.
Since your cruise will consist of little real ethnic food, I suggest you go by any resturant on 8th Street and have Cuban coffee and toast Or squish a ham croqueta in between the bread--yum! Less than minutes from the Port of Miami too.