Publix at Marathon is a well-stocked grocery store with a great selection of fresh items including sushi, fruit, and wine, along with a helpful pharmacy. The store is generally described as clean, well laid out, and enjoyable to visit, with services like having groceries bagged. Specific staff members, like those in the produce and butcher departments, receive praise for being very helpful and accommodating with special requests like ordering flowers or cutting meat. However, some customers note that prices can be on the high side compared to other local stores. The small parking lot can also be challenging. A significant concern raised involves an uncomfortable incident where a staff member demonstrated disrespect toward a coworker, which made a customer feel uneasy. Additionally, a language barrier was encountered with some employees, making it difficult to get assistance locating products. Despite these issues, many find it a worthwhile stop for groceries and essentials while in the Keys.