When I left from MIA in January on AA, there was no curbside check-in. When you went towards the ticket counters, you were asked where you were going, and since I said SXM, we were sent to a separate line where they checked your test results. Only after that did you go to the ticket counter and check in. Fortunately it was a Friday and I was one of the first in line and it really \wasn't a problem.