If you would like to re-enter Vietnam again within 30 days of your very last visa exempt entry, you'll need to submit an application for a new visa to be able to be allowed back in. You may well need to get a pre-approved visa. Visa on arrival is easily the most comfortable approach to get your visa without wasting time. With this kind of short timeframes, it's crucial to be clear on the procedure and what's required, especially if you're travelling to China on short notice. There are some alternatives for getting a Vietnam visa. Any extra work necessary to finish a visa in a timely manner might be subjected to an extra charge.