Hello, I'm currently planning my itinerary for Argentina and trying to finalize my flight bookings. To ensure a smooth entry into the country, I’m trying to identify the main hub for international arrivals. Could you clarify which airport serves as the primary point of entry? I’d like to know its distance from downtown Buenos Aires, the quality of transport links, and whether most major carriers like American or LATAM use it as their base. This will help me decide if I should book a connecting flight immediately or spend the first night in the capital.