Key requirements and recommendations include: 1) Possessing cash equivalent to 100 USD per person per day (bank statements are not accepted as proof). 2) Having confirmed return tickets to your country of citizenship/residence. 3) A booked hotel or accommodation. 4) A detailed tourist itinerary (at least 3 locations per day, logically structured). 5) Valid K-ETA or visa, ensuring all data matches actual travel plans (e.g., purpose of visit). Do not present all documents unless explicitly asked. Some travelers report not being questioned on cash, but it's a stated requirement.
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