How long does it take to get a visa approved from Hanoi, and can you extend your stay if the approval takes too long?

A user inquired about the visa application processing time after submitting their application in Hanoi, noting a wait of over 10 days without a response. Community members provided insights, indicating that processing usually takes 10-15 business days and highlighted upcoming Thai holidays that could affect processing times. The user later updated that their application was approved after a total wait of around 6 business days. Additional comments discussed concerns about extending a visit if waiting for a visa approval while on a short stay in Vietnam.