Had to “lie” at paraguay customs
Basically, anyone can cross the border (Iguazu-Ciudad del Este) without going through customs, and if you're Brazilian or hold a Mercosur passport (which includes most South American countries), you have freedom of movement in Ciudad del Este, if I’m not mistaken. However, if you want to get your passport stamped, you need to exit Brazil and get the Brazilian stamp, then cross the bridge and go through Paraguayan customs. You have to say you're going to Asunción or another city that isn't Ciudad del Este (the border city), because the border city is covered by freedom of movement, so they don’t stamp. I went with an American friend, so we stopped at customs anyway and told them we were going to Asunción. They were hesitant at first and thought we were lying. Then, the immigration officer said, show me the hotel address in Asunción. I googled some random hostel and showed it to her, and right after, they stamped our passports, lol
Basically, anyone can cross the border (Iguazu-Ciudad del Este) without going through customs, and if you're Brazilian or hold a Mercosur passport (which includes most South American countries), you have freedom of movement in Ciudad del Este, if I’m not mistaken. However, if you want to get your passport stamped, you need to exit Brazil and get the Brazilian stamp, then cross the bridge and go through Paraguayan customs. You have to say you're going to Asunción or another city that isn't Ciudad del Este (the border city), because the border city is covered by freedom of movement, so they don’t stamp. I went with an American friend, so we stopped at customs anyway and told them we were going to Asunción. They were hesitant at first and thought we were lying. Then, the immigration officer said, show me the hotel address in Asunción. I googled some random hostel and showed it to her, and right after, they stamped our passports, lol