hikorea visa change MOFA Korea immigration behavior patterns Korea hikorea visa extension A-1 visa South Korea overstaying visa foreigner Korea visa ng gobyerno sa Korea layover Incheon airport visa extension korea immigration deadline Korea visa 단기 체류 diplomatic family visa overstay visa korea penalty immigration korea entry ban korea visa problem UN visa Korea visa evaluation Korea foreigner re-entry permit Korea opisyal na visa Korea HiKorea overstay refugee travel document extend stay korea visa overstay Korea diplomatic visa Korea visa timing mistake Korea visa ng international organization visa rejection korea documents Korean diplomatic visa for ambassador Korean visa guide for diplomats gabay sa Korean visa ประเภทวีซ่าเกาหลี visa risk signals Korea immigration fine Korea Korean transit visa immigration rejection reasons Korea MOFA visa Korea change visa status korea วีซ่า Fulbright foreigner visa korea วีซ่าทหารอเมริกันในเกาหลี Korean immigration decision logic B-2 visa Korea 재입국 허가 visa-free entry Korea วีซ่าที่ไม่ต้องลงทะเบียน Korean tourist visa B-1 비자 한국 비자 정보 visa evaluation criteria Korea immigration decision logic Korea immigration evidence korea visa Korean short stay visa 대한민국 무비자 입국 난민여행증명서 korea immigration guide visa ng consular staff Korea วีซ่า SOFA A-2 visa Korea คู่มือวีซ่าเกาหลี วีซ่าตามข้อตกลงเกาหลี visa change korea วีซ่า A-3 เกาหลี 사증면제 foreign service visa Korea Korean consular visa