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