Back in ffxiv 1.0, alpha and beta test, SE said that only people from NA, EU and JP were considered for the alpha test. They said alpha test was just for testing servers and that they wanted to see if other countries had issues with the connection but they were going to check that during the beta test. I got my invitation for the beta test in the first wave of invitations. I live in Chile and I think they will do the same this time.