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