Apple Pay works almost everywhere cards are accepted. Always choose Brazilian reais (BRL), the local currency, on the card machine, not US dollars. Businesses do not take dollars, so carry reais if you want cash. US$1 is about R$5. A 10% service charge is usually included; no extra tip is expected.
Brazilian outlets fit a slim two-prong European plug, not the larger round European plug. Rio has both 127V and 220V outlets, so check before using anything that is not dual-voltage.
Wait inside until your Uber arrives and check the plate. The MetrôRio is useful during the day. Skip buses and rental cars.
Leave the luxury items at home. Avoid bringing expensive jewelry (i.e. necklaces, luxury watches, etc.). Keep your passport at the hotel. Avoid walking on the beach alone after dark. During the day, do not leave your bags unattended. Avoid map shortcuts through hillside communities (favelas).
Set up roaming or an Airalo eSIM before you land. Install WhatsApp, Google Maps, and Google Translate. Keep your phone out of sight on the street.
Save Christ and Sugarloaf for a clear day. Bring sunscreen, repellent, and a light rain layer. Swim between the lifeguard flags. Please expect (warm tropical) spring weather during October in Rio.
Police: 190 · Ambulance: 192 · Fire: 193