13 Mistakes First-Time Visitors to South Korea Make
The biggest recurring mistakes: relying on Google Maps for walking or transit directions (it doesn't route properly in Korea — use Naver Map or KakaoMap instead), not getting a T-money card on arrival, assuming any ATM takes foreign cards (only about 1 in 5 do — look for 'Global ATM'), confusing Jeju Island's separate visa policy with the mainland's, and underestimating how zero-tolerance Korea's drug laws are, cannabis included.
Most South Korea trip mistakes aren't about picking the wrong city or restaurant — they're small, avoidable logistics slip-ups that cost time or money on day one. Here are the ones that come up again and again.
1. Relying on Google Maps for directions
This is the single most common trip-up. Google Maps can find places in Korea fine, but it doesn't provide turn-by-turn walking or transit directions here, due to South Korean map-data export restrictions tied to security concerns with North Korea. Download Naver Map or KakaoMap before you land — both have English-language modes and actually route you properly.
2. Not getting a T-money card immediately
Skipping the T-money card and buying single-journey tickets for a few days 'until you figure it out' costs real money over a week-long trip, and it's genuinely one of the first things worth doing on arrival — sold and topped up at any CU, GS25, or 7-Eleven convenience store for about $2-3.
3. Assuming any ATM will take your foreign card
Only roughly 1 in 5 Korean ATMs accepts foreign-issued cards — the rest will simply decline. Look specifically for a 'Global ATM' or 'Global Service' label, usually with an English-language menu option; these are common at convenience stores, post offices, and major bank branches, but not guaranteed everywhere.
4. Confusing K-ETA with a full visa
K-ETA is a separate electronic travel authorization layered on top of a passport's existing visa-free status, not a substitute for a visa if your nationality doesn't already qualify for visa-free entry. It's currently temporarily suspended for many nationalities through the end of 2026 — worth double-checking your specific passport's status rather than assuming, since the rule is due to snap back for many nationalities from 2027.
5. Mixing up Jeju Island's visa rules with the mainland's
Jeju runs its own, more permissive standalone visa-free policy — but entering Jeju without a visa doesn't automatically let you continue on to Seoul or the rest of the mainland if your nationality otherwise needs one there. Check both sets of rules separately if your itinerary includes Jeju plus the mainland.
6-13. The rest of the list
- Underestimating Korea's zero-tolerance drug laws — this includes cannabis and CBD, regardless of what's legal at home, and applies to everyone including Korean citizens who used it legally abroad.
- Booking only 2-3 nights in Seoul — the city is denser and more spread out than it looks on a map; 4-6 nights is the realistic minimum to see it properly.
- Trying to day-trip Busan from Seoul — the KTX round trip alone eats about 5 hours, leaving barely enough time to see one neighborhood properly.
- Showing up to a palace on a Tuesday — Gyeongbokgung and most of Seoul's other royal palaces are closed that day.
- Not booking the DMZ tour far enough ahead — popular weekend and morning slots sell out 2-3 weeks in advance.
- Expecting Uber to work like it does at home — it functions mostly as 'Uber Taxi' here, hailing a regular metered cab rather than a true rideshare.
- Skipping travel insurance because Korea feels 'safe' — it is genuinely one of the safest countries to visit, but insurance still covers medical costs, trip delays, and lost luggage regardless of destination safety.
- Leaving a tip — tipping isn't customary anywhere in Korea; it can even mildly confuse restaurant staff who aren't set up to handle it.