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