Seoul is one of the easiest cities in Asia to visit. Unless you didn’t read the 2026 entry updates.

The e-Arrival Card is new. It’s required. Forgetting to fill it out before you land means you’re standing at immigration filling it out on your phone while everyone else walks past you. The K-ETA rules changed again. Hand warmers got confiscated at customs. Gwangjang Market doesn’t take cards — and most people only find this out when they’re already there, hungry, with no small bills.

One traveler read this playbook the night before departure and discovered she hadn’t filled out the e-Arrival Card. Fixed it in 10 minutes. Zero delay at immigration. She said: ‘That alone was worth it.’

What’s inside:

• 📅 5-day itinerary template — Hongdae, Myeongdong, Gyeongbokgung, Seongsu optimal routing
• 📋 2026 entry requirements — e-Arrival Card, K-ETA, customs declaration step-by-step
• 💸 Money strategy — where to exchange, how much to carry, small bills breakdown
• 🚇 Transport guide — T-Money vs Cashbee, airport rail vs bus decision
• ⚠️ 2026 updated trap list

🛡️ Follow the guide and still get caught by something it covers → full refund.