In the hour since we left the Santiago airport, two people have said "adios" to us (cab driver and check-in lady). Normal, right? No! When I heard the word, I flipped my head in surprise. I don't think I realized it until this morning, but we just don't say that in Peru! "Chao" or "nos vemos" or "hasta luego," but never "adios." I'll be interested to see what other cultural differences stand out.