Originally Posted by
tuchop
Unfortunately, you are. The FAQ of the lounge (found
-in spanish- here) states that with argentine-issued cards, gold and up (plat and cent) can access for free. And then it says that if your card was issued outside argentina, to enter for free you'll need a Platinum or Centurion card. I would go and try your luck anyways.
If they follow the USA Centurion lounge model, anyone with some sort of AmEx card can get in for $50 if they don't have a card which gives free entry.