Because I live in Central America and have never been south of Quito, I am uncertain on how things play out being from Uruguay. If you are able to figure out that you are a citizen of Uruguay, obviously, this bodes well for you as far as getting a flying job in Uruguay. I am not certain what efect this would have for you in other South American countries beyond what Captain Stable and I have stated.
A good level of Spanish would be essential, not necesarily for scoring with the ladies, but for the professional part of your existence there.