Do I need a visa for Brazil?
US, Canadian and Australian citizens need a Brazilian eVisa (apply online, ~5 business days). UK and EU passport holders enter visa-free for up to 90 days.
How long is the flight from Chicago?
Nonstop or with a short connection, plan on about 11h 28m from Chicago to GRU. Add roughly an hour for the transfer to the venue.
When should I book?
Fares for event weeks are usually lowest 10–12 weeks out and rise sharply after the full lineup or schedule is announced. Set a price alert early.