Andorran passport holders require a visa to visit Vietnam. The document outlines how to obtain an e-visa approval letter online to visit Vietnam without a visa. Applicants submit their information and payment through the website and will receive a response within 2 days whether their application is approved or not. If approved, they will receive an approval letter to present at the airport. The document also provides tips on passport validity, photos, arrival airports and visa requirements for dual nationals of certain countries who may not require a visa.