If I get a visa approval letter from you and then I I get on flight to Vietnam. Whether my visa approval letter is refused at the airport, or in other words, whether i cannot get visa stamped at the airport with the approval letter. Thks for your response.
Be kindly informed that once you get your valid visa approval letter containing correct information, you surely get the visa stamped at the arrival airport since the visa approval letter is not issued by us, it is issued by the Vietnam Immigration Department and we are here just to connect between you and the Vietnam Immigration Department (which cannot be accessed by individuals) for the letter processing. So no worry at all once you get the visa approval letter and enter Vietnam by air.
To know more about how Vietnam visa on arrival works and to apply for one, please click http://vietnam-visa.co.uk.
Have a nice day,