On arrival at international airport in Vietnam, you need to prepare a printed copy of your visa approval letter, your passport, two 4x6cm photos of yours  and US25$ for stamping fee per person for single entry visa (or US50$ formultiple entry visa) to show to the Immigration Officer to get your visa stamped into your passport. Besides, you are required to fill out the entry/exit form for customs clearance. The procedures will take you about 15-20 minutes in total.

For details of procedures, please kindly read through the procedures at Vietnam airport.