From 150 source records, 148 valid low-rating reviews were retained after cleaning, revealing long-term service weaknesses and recent conflicts involving product quality, portions and promotion fulfillment.
110 reviews mention service attitude or response, covering 74.3% of valid samples. Gaps recur in greeting, queuing, ordering, assisted cooking, add-on orders and complaint escalation.
In 2025, 73.3% mention service, 60.0% mention food products and 33.3% mention efficiency. This points to combined instability in staffing, training and standard execution.
All seven 2026 reviews are one-star. Portions, product delivery and promotions each appear in four reviews, while stock or menu issues appear in three. Transaction rules are amplifying low-rating experiences.
2026 includes data only through July and should not be compared directly with full years. The focus is severity and issue structure, not quantity alone.
Service remains the long-term baseline. Product and efficiency issues worsened together in 2025, followed by portion and promotion-fulfillment conflicts in 2026.
The risk is not a continuous rise in annual volume, but the spread from service complaints into product standards, redemption rules and inventory synchronization. Standard replies or short promotions cannot prevent recurrence.
One review may match multiple issues, so coverage rates cannot be added. Ranking considers severity, recent frequency and operating consequences.
Darker cells indicate more issue mentions in that year.
Mention frequency is calculated only from low-rating samples and does not represent sales volume or overall satisfaction.
For beef and grilled meat, control freshness, slice counts and assisted-cooking doneness. For cold noodles, fried rice and drinks, prevent missed orders and temperature failures. Promotion items must reflect live inventory.
P0 protects food safety, service and product delivery. P1 repairs portions, redemption, efficiency and inventory. P2 optimizes arrival flow.
Locate original evidence by rating, year, issue and keyword. Duplicate copies have been removed from the analysis sample.