Serve guests professionally and warmly. In practice this covers independent execution, quality assurance of one's own results, and close alignment with adjacent roles and interfaces.Serve guests professionally and warmly. In practice this covers independent execution, quality assurance of one's own results, and close alignment with adjacent roles and interfaces.Serve guests professionally and warmly. In practice this covers independent execution, quality assurance of one's own results, and close alignment with adjacent roles and interfaces. moreServe guests professionally and warmly. In practice this covers independent execution, quality assurance of one's own results, and close alignment with adjacent roles and interfaces.