The AT&T Store in Maryville offers a mixed customer experience. While the staff, including Skyler, Kara, Mr. Emory, and Cara, are praised for their kindness, knowledge, and teamwork, the store's selection of phone colors and cases is limited. However, the business has faced criticism for not honoring a competitor's offer, which has left some customers unsatisfied. Overall, the AT&T Store provides a generally positive experience, with helpful and professional staff who work diligently to assist customers.