LOL, It's getting out of hand in SP.
This morning I saw the USD menu came up on the credit card terminal while paying for breakfast, I immediately put up my hands and say don't move so the waitress did not touch the machine. LOL. I laughed because I over reacted. Haha.
Tonight I tried to pretend I am calm when I saw the USD menu again when paying for dinner. The waitress hand was so fast that she just hit Accept before I realized what was going on. Then I saw the USD 35 notification on my phone. I googled the conversion and showed the waitress the BRL amount and the amount on the bill. She understood and called the accountant or manager for a refund, and selected 2 to charge in BRL this time. It came thru as 30 USD.
Walking through landmines
I saw a third kind of terminal after lunch. It works more like ATM that you must decline.
The basic rule is don't select default (1, green or accept), decline (2, red, decline) if you are not sure.
Cost of accomodation: Rio vs Sao Paulo
The extortionate price of accommodation in SP is a turn-off in any protracted mongering holiday. Am I right in assuming that all else equal, Rio is better in that respect? I haven't set foot in Rio over the last two decades.