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