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