I am headed down to South America on AA/LA and will be using SCL and EZE airports during my trip. I am AA Plat/ow Sapphire. I have searched FT looking for lounge information and have a few questions concerning what I found.

EZE - looks like the AA Admirals Club is the lone shared lounge for oneworld carriers?

SCL - In addition to AA AC, LanChile has two lounges. Are both LA lounges open to oneworld sapphire passengers?

Any advice on which ones are the nicest to use?

Thanks!