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