Only in Vietnam can I be a millionaire even if only for a minute (unless I'm rather frugal when it comes to expenses). I don't advise changing money at the airport because it's always lower. Plus it's always good to ask around. But I needed it because I had to take an airport limo to the hotel. A hundred US bucks netted me Vietnamese Dong 1,948,000! But it cost me VD 600,000! Talk about being taken for a ride!