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