I am visiting Buenos Aires next month and I read some posts about visiting Colonia. I heard Uruguay was more expensive than Buenos Aires and kind of boring but I wanted to get another country visited under my belt since I'm there. It seems like I can also use this border trip to extend my 3 month tourist visa so that will be nice as I want to stay about 6 months there. Does anyone know if you can still withdraw US dollars there? I read that you could withdraw $100 US bills there a few years ago. Is that still the case? Are tickets reaonsable?