The AREX round-trip QR arrived in the app straight away and the gate reader accepted it without any paper ticket. Forty-three minutes from Incheon to Seoul Station with luggage space.
Gwangjang Market is loud and packed but that is the fun of it. Go before noon if you want a seat, and bring cash because a few stalls still do not take cards.
Seongsu is my favourite walk in Seoul. Most roasteries have English menus and the staff were happy to explain the beans, and there are plenty of quiet seats on a weekday morning.
Myeongdong is crowded but the tax refund kiosks are easy to find and most shops accept cards. Come on a weekday evening if you hate queues.
The clinic staff spoke Japanese and English, so the consultation was stress free. Aftercare instructions were printed out for me and a follow up message came two days later.
Itaewon at night is the easiest place in Seoul to eat when you do not speak Korean. Most menus have English, and the halal places near the mosque were a lifesaver for my family.
The Olive Young e-coupon arrived instantly and worked at the Myeongdong store. I bought sunscreen and sheet masks, and the staff scanned the barcode straight from my phone.

Itaewon Street
용산구 · 서울 용산구 이태원로

Seongsu Cafe Street
성동구 · 서울 성동구 연무장길

Gwangjang Market
종로구 · 서울 종로구 창경궁로 88

Myeongdong Shopping Street
중구 · 서울 중구 명동길

Gyeongbokgung Palace
종로구 · 서울 종로구 사직로 161

Insa-dong Ssamziegil
종로구 · 서울 종로구 인사동길 44

Namdaemun Market
중구 · 서울 중구 남대문시장4길 21

Mangwon Market
마포구 · 서울 마포구 포은로8길 14

Yeonnam-dong Gyeongui Line Forest Park
마포구 · 서울 마포구 연남동 245

Ikseon-dong Hanok Street
종로구 · 서울 종로구 수표로28길

Apgujeong Rodeo Street
강남구 · 서울 강남구 압구정로42길

The Hyundai Seoul
영등포구 · 서울 영등포구 여의대로 108

Cheongdam Luxury Street
강남구 · 서울 강남구 압구정로 440

Lotte World Mall
송파구 · 서울 송파구 올림픽로 300

Hongdae Walking Street
마포구 · 서울 마포구 어울마당로

Euljiro Nogari Alley
중구 · 서울 중구 을지로13길

Dongdaemun Design Plaza
중구 · 서울 중구 을지로 281

Samcheong-dong Street
종로구 · 서울 종로구 삼청로

Bukchon Hanok Village
종로구 · 서울 종로구 계동길 37

Garosu-gil
강남구 · 서울 강남구 압구정로10길