Border Crossing: how it works in Brazil — first-hand
Real experience of people from chats on «Border Crossing» in Brazil — as it is, no fluff. For your case — ask Luky.
From real experience
Visiting Iguazu Falls independently is recommended over guided tours. One day is sufficient for each side (Argentinian and Brazilian). Travelers can cross the border into Ciudad del Este, Paraguay, for shopping (electronics, alcohol, perfume). Border crossing is often done without formal passport stamping, but travelers should have ID ready if requested.
When crossing the border from Brazil to Argentina at Iguazu Falls on an organized tour, the tour guide typically collects passports and handles immigration processing. Physical entry/exit stamps are sometimes omitted.
Iguazu Falls travel tips: Allocate 2 full days for both sides. Argentinian side is best for close-ups (Devil's Throat) and has more space, Brazilian side is best for panoramic views and the Bird Park. Private drivers are highly recommended for border crossings and logistics. Purchase tickets online to avoid long queues.
When crossing the border between Brazil, Paraguay, and Argentina at Foz do Iguaçu, travelers have reported that yellow fever vaccination certificates are typically not requested or checked by border officials due to the high volume of foot traffic. However, it's always recommended to consult official health guidelines for the latest requirements.
When traveling between Puerto Iguazu (Argentina) and Foz do Iguaçu (Brazil), consider that Uber availability can be inconsistent, especially at Puerto Iguazu airport. Local "taxi" drivers (bombilas) are often an option and may accept Brazilian Reais. They can also assist with border crossing. Long distances and return trips from the airport can influence driver availability. Cabify is an alternative app that may offer better service in Puerto Iguazu. Having local driver contacts or pre-booked transfers is advisable.
The cost of a taxi to cross the border between Puerto Iguazu (Argentina) and Foz do Iguaçu (Brazil) is approximately 200 Brazilian Reais. Uber operates in Brazil but not reliably in Argentinian Puerto Iguazu. Drivers can be hired to cross the border directly, which is convenient, especially from the Argentinian airport to a hotel in Brazil. Taxis may accept payment in Reais. Hotel reception can assist in arranging taxis.
Transportation at the Iguazu Falls border area: Uber and 99 apps are unavailable in Puerto Iguazú (Argentina side). Travelers must rely on local taxi services or public buses. Expect significant border crossing delays due to traffic.
Iguazu Falls logistics: Brazilian side requires 1 full day for park and boat tours. Argentine side recommended 2 days. Border crossing is easy by local bus (not numbered, usually green/light green, no online ticket needed, pay on-site). Note for Argentina: entrance fees require physical cash (pesos) or magnetic strip cards; NFC mobile payments are often not accepted.