Actually, I've gotten upgraded as a V fare passenger flying out of Panama as well as out of Guatemala to Houston. The Elite base is not very large so the probability is quite high in either country based on my experience. I find the seats extremely comfortable, no exaggeration, and their service is 200 times superior than TACA. When it is hot out, and i sit in a leather seat, the leather feels nice and cool! The food on CO/CM (Copa) is amazing! Great wines to go with it!