Originally Posted by
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We recommend that you obtain your entry visa by having a valid passport stamped prior to your departure by applying to any one of the Vietnam Embassies and/or Consulates worldwide. However, if your particular city does not have a Vietnamese embassy, and you wish to avoid procedural delays (anywhere from 4 to 10 days) which sometimes happen with visa approvals at embassies outside Vietnam, VietnamStay.Com can make this requirement a fairly easy exercise. We provide a form below, which you may copy and paste into a word document, fill out and return to us with the required information by fax or email. We will then arrange to obtain the visa approval code service for you. You will subsequently still need to get the official Vietnamese stamp of approval on your passport at any of our Embassies. Following such an approval, we will send you notification (by fax or email) and fax the approval to your desired Embassy or Consulate. You will need to take that approval with your passport to that Embassy or Consulate to get the visa stamp on your passport, which is done on the same day. You are now ready to go Vietnam!
I walked into a Vietnam embassy in Europe and had no problem getting a same-day visa for my US passport. No questions asked.