Promptly and conscientiously
For travel to Vietnam with arrival of 22nd November, when should I apply for the visa letter?
You can apply at any time because the Vietnam visa validation will start from your registered arrival date, not the date you apply. The sooner you apply, the sooner you get your visa letter.
To apply for the visa approval letter, follow this link: https://booking.vietnam-visa.com/step1.html.
Should you need any further information about Vietnam visa or travel, please feel free to let us know.