– They have a really odd system of payment here in a lot of establishments that involves getting a card (paper or electronic) that is then filled out (or scanned) with whatever items you purchased for payment at a cashier at the end. If you lose the card, there is a hefty fee. This system I have seen in bars, clubs, bakeries…any place where there are slightly upscale consumables. And most of these places have large menacing guys who look like they will break your knuckles should you try any funny business.
– The Sao Paulo metro is mostly wonderful. The lines are orderly, the service very fast, the stations large and clean. The only problems I see with it are the lack of AC (and it can get hot in the cars), and the price per ride (which at about one dollar US, seems a bit steep vis a vis the average salary).