This is Goseong County in Gyeongnam, not Gangwon. Its third round covers October 16–November 30, with applications open from October 13 until funding runs out. You need two attraction photos and at least KRW 100,000 in spending; youth applicants aged 19–34 have a cap of 580. Lodging payment has card/receipt exceptions.
Travel dates and application dates are different. Availability can end early. Confirm your approval before departure; transport, room rates and business hours require separate verification.