Answer:
the first one asks what your opinion on arroz con leche is and the second one asks if you think its good or horrible, does this help?
the answer will be "tú eres de Miami" because "eres" means are, so it will be like saying you are from Miami. To use "estás" makes no sense since it would be like saying you are Miami.
El actor ensaya las escenas , mientras el tramoyista prepara la escenografía.
The correct answer is ensaya las escenas , prepara la escenografía.