Circle K in Harlingen is a convenient store that has seen some recent improvements. Customers appreciate the friendly cashiers and the store’s cleanliness, especially when it is well-maintained. The store features a one-door entry and exit system, which helps keep the flow of customers smooth. There are some issues with the restrooms, which are often not clean, and the store sometimes lacks ice and fully stocked drinks like Dr. Pepper. After 10pm, cash back is not available, and some customers find the customer service to be rude at times. However, recent visits show that management is working to improve service, with helpful staff willing to assist and new self-checkout stations that speed up checkout. Customers also mention that the store is generally kept up well, and it's nice to see new businesses coming into Harlingen. Overall, while there are some areas for improvement, Circle K is considered a good, convenient store by many regular visitors.