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