Regarding to Argentina, alcohol is not such a big problem as it is in others places in the world (germans, british, even spaniards drink way too more than argentines), and we also dont have a big problem with drugs, although this is changing fast, the Paco which was the main problem it seems to be more controlled lately, marihuana it is common as everywhere I guess, cocaine, its for a very tiny circle here, you dont have a big market, its not as popular as in the US, heroine, etc, we almost dont have it here, like you have it in Nordic countries, so Argentina, despite of changing its status of "pais de paso" to "pais de llegada/consumo" about drugs, its smaller than other parts.