In this section, “customer” means an individual who is lawfully on the premises of a retail establishment. A retail establishment and any employee of a retail establishment are not civilly liable for any act or omission in allowing a customer, including a customer who has an eligible medical condition, as defined in § 24–209 of the Health – General Article, to use a toilet facility that is not a public toilet facility, if the act or omission: Is not willful or grossly negligent; Occurs in an area of the retail establishment that is not accessible to the public; and Results in an injury to or death of the customer or any individual other than an employee accompanying the customer. Notwithstanding any provision of this section, an employee toilet facility is not to be considered a public restroom.