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