The document provides information for those living in Seoul who want to apply for a Vietnam visa but are not eligible for visa exemptions. There are two options - applying directly at the Vietnam Embassy in Seoul or applying for a visa on arrival online. To apply at the embassy, one must go in person with their passport. Alternatively, those living far from the embassy can apply online for a visa on arrival, which involves submitting an application, paying, and receiving an approval letter by email to have their visa stamped upon arrival in Vietnam.