(c) Every operator of a skateboard or roller skating park or rink shall post and maintain a warning sign in a clearly visible location at the entrance of the park or rink and any other conspicuous location within the park or rink as specified in this section. The sign shall serve as a warning to the roller skaters, skateboarders, assistants, spectators, and any others involved in this activity that the operator of the park or rink has limited civil liability under Alabama law for skateboarding and roller skating activities occurring at the park or rink. Failure to comply with the requirements concerning warning signs provided in this section shall prevent an operator of a park or rink from invoking the privileges of immunity provided by this section. The warning notice shall appear on the sign in black letters with each letter to be a minimum of one inch in height and shall contain the following notice: "WARNING
"Under Alabama law, a skateboard or roller skating park or rink operator is not liable for injury, damages, or death of a participant, assistant, or spectator in skateboarding or roller skating activities in the park or rink resulting from the inherent risks of skateboarding or roller skating activities. If skateboarding is permitted in this facility, any person skateboarding in this facility must wear appropriate protective equipment including a helmet, elbow pads, and knee pads."