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