visa violation travel korea Korea travel guide VAT refund Korea overstay exit risk Korea Korea tax refund tourist overstay Korea consequences tourist exit procedures Korea missed last subway Korea AREX Korea overstay clearance Korea visa-free Korea korea entry requirements 서울 쇼핑 환급 한국 세금 환급 airport transportation Korea korea travel tips esim korea tourist medical emergency Korea overstay Korea korea mobile internet Incheon Airport late night transportation tourist entry denial korea late arrival Seoul taxi Incheon Airport travel to korea Myeongdong tax kiosk 공항 환급 방법 late night bus Korea taxi at night Korea k-eta korea immigration overstay decision Korea Incheon Airport to Seoul after midnight tourist exit record Korea Korea tourist visa tourist rules Korea korea tourism guide visa free korea night transportation Korea korea connectivity Incheon Airport to Seoul hospital visit tourist Korea Tax refund in Korea travel Korea tourist visa rules korea illegal work tourist korea immigration risk Korea night bus airport airport bus Seoul 외국인 택스 리펀 korea sim card