Entry & Exit:
You must have a valid passport and an onward/return ticket for tourist/business visa free stays of up to 90 days. Your passport must be valid for the entire time you are staying in Japan. You cannot work on a 90-day visa free entry.
Currently, there are no COVID-19 testing , proof of vaccination, or quarantine requirements to travel to Japan.
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U.S. citizens can visit South Korea without a visa and stay for up to 90 days with just their passport. With the optional K-ETA, they can avoid completing an arrival card.
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