Hi all!

I'm going to Brazil in a month. To get a visa, you have to have a round trip ticket. But, what if I want to stay longer? What if I have money left after my 90 day visa period ends and want to go to Argentina for a month?

Does one always get charged to change the dates of their return flight? What if you didn't purchase your flight and use miles to get it--does that change anything?

Any answers and wisdom would be much appreciated!

Thank you!

Alec