If you wear a hat inside a theater, you may be fined.
Background information (if available):
61-6-16. Wearing hats in theaters and places of amusement; penalty.
No person attending any performance at any theater, hall or opera house, or any such building where theatrical or other performances are given, when an admission fee is charged, shall wear upon his or her head any hat, bonnet or covering for the head which may obstruct the view of any person or persons during the performance in such theater, hall, opera house or other building where such performance is given; and if any person wear upon his or her head any hat, bonnet or other covering for the head which may obstruct the view of any person or persons, and refuse or fail to remove the same at the request of any person or persons whose view may be obstructed, he or she shall be guilty of a misdemeanor, and, upon conviction, shall be fined not less than two nor more than ten dollars.