Having never visited Vietnam, I am apprehensive about getting cheated by taxi drivers while making a four day visit to Saigon. How can I best avoid this, especially when traveling to and from the airport. Would I be best to go with a "Meet and Greet" service on arrival? But what about getting around town? Converting Dong to Dollars seems pretty cumbersome. Has someone mastered an easy way to do this? Should I carry a calculator? I detest getting into a dispute with these guys as I have in Chile, Argentina, France, etc. Should I insist on a metered cab? Should I only use taxis that are sanctioned by the hotel (The Renaissance in this case). Any suggestions will be appreciated. Thank you.^