First of all I apologize for my bad English. I will try my best here to explain my current situation.
Next week I will travel to Germany for work, and I will stay for some days. The company gave me some extra money (in euros) that I can spend the way I want. The thing is, when I come back to Brazil on the next day I will get my vacation so I will travel to the US!
I decided to spend this extra money in the US so my question is: Is it better to exchange the euros for dollars in Germany or should I keep it and exchange it when I get to US?