Korean is the primary language; English and other foreign language support is not documented.

• Korean is the confirmed operating language
• No English, Japanese, or Chinese language support documented
• No multilingual signage or translated menus on record
• This is a casual noodle shop with basic ordering (single menu item)
• Visitors without Korean language ability may face communication challenges

Based on language_support field which confirms korean=true but all other language fields (english, japanese, chinese_simplified, chinese_traditional) are null. No accessibility guides (audio_guide, sign_language_guide) are documented. Answer reflects only confirmed data; absence of information does not guarantee unavailability.

Ollae Guksu accepts card payments, but foreign card compatibility is not confirmed.

• Card payments are accepted at this restaurant
• Foreign card payment compatibility is not documented
• The restaurant serves a single menu item (meat noodle soup) at moderate prices
• Cash backup is recommended due to uncertainty about foreign card support
• Located in Jeju City with limited operating hours (08:00–15:05)

Backed by commerce.card_payment (true) and commerce.foreign_card_payment (null). No price_band or detailed pricing in commerce.price_notes_ko. Cannot confirm foreign card acceptance; recommend contacting the restaurant directly.