Korean-only establishment; English, Japanese, and Chinese support are not confirmed.

• Korean language only confirmed available
• No English, Japanese, or Chinese support documented
• No multilingual signage or translated menus on file
• No audio guides or alternative language accessibility features listed
• Staff language capabilities beyond Korean are unconfirmed

language_support field shows korean: true; all other language fields (english, japanese, chinese_simplified, chinese_traditional) are null. accessibility fields (audio_guide, sign_language_guide, etc.) are also null. Answer reflects documented absence of non-Korean support; does not assume staff capabilities.

Café Guljjkkotdarak accepts card payments, but foreign card compatibility is not confirmed.

• Card payments are accepted at this café
• Foreign card compatibility is not verified in available records
• Carrying cash as a backup payment method is advisable
• The café is located in Jeju and is open daily 10:00–18:40
• Last order accepted at 18:00

Based on commerce.card_payment (true) and commerce.foreign_card_payment (null/unverified). No information available about specific card networks accepted or foreign card support. Recommend contacting the café directly for definitive payment method details.