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