Hi, to be able to stay in Vietnam, you will need a visa corresponding to your entry period. Visa has terms from 1 month to 5 years with different prices. You can refer to know more
Saw a youtuber post yesterday only people holding Diplomat or Special Skills Passports (i.e. English Teachers) are currently allowed into Vietnam. Of course that's today, I'm hoping this changes by the Fall. Good luck.
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