I've been wondering if it is practical to exchange my money on the airport or just on a money changer when I reach the country of my destination. I tried the latter, it was not such a bad thing after all. I was guided by my friend, who happened to be my tour guide and told me the best place where to have a good value of my money. She said, I might not get the best value if I exchange my money at the airport. Good thing she was there!