The Brazilian monetary unit is the Real (R$ / BRL). The currency rate is available in every daily newspaper, followed by the american dollar exchange rate used in international business transactions.
Cash money and traveler checks, especially in american dollars, can be exchanged in almost every bank, exchange places and hotels. All major credit cards are accepted in Brazil and only a few stores and restaurants accept foreign currency.
Nearest exchange bureau:
From Monday to Friday, Rua Teodoro Sampaio, 1020. http://www.thalercambio.com.br/. Around 1km from the venue.
Confidence Câmbio and Getmoney Câmbio @ Shopping Eldorado, Avenida Rebouças, 3970. https://www.confidencecambio.com.br/ and http://www.shoppingeldorado.com.br/card/getmoney-cambio. Around 4km from the venue.
Cotação Bank @ Shopping West Plaza, Avenida Antartica, 380, bloco A. https://www.confidencecambio.com.br/. Around 3,5km from the venue.