No person conducting, maintaining or carrying on a dancing academy shall permit any person under the age of sixteen (16) years to enter, dance or be instructed in dancing between the hours of six o’clock P.M. and twelve o’clock midnight of any day, unless such infant be accompanied by his parent, guardian or person exercising parental control over such infant, or by any other adult person authorized in writing by the parent, guardian, or any other adult person exercising parental control of such infant, to accompany the infant to any dancing academy.