Amusement rides and devices; hiring of ride or device operator under eighteen. Aquatic rides and devices; hiring of lifeguards under eighteen.

(b) Nothing in section 29-133 or 29-136 shall be construed to preclude the hiring of certified lifeguards under the age of eighteen to oversee aquatic rides and devices such as pools, water slides, lazy rivers or interactive aquatic play devices, provided an adult of at least eighteen years of age who is trained in normal operating and emergency procedures supervises the area containing such aquatic rides or devices.