No minor under the age of 18 shall be employed in any rooms constituting the place in which intoxicating liquors or 3.2 percent malt liquors are served or consumed or in any tasks involving the serving, dispensing, or handling of such liquors that are consumed on the premises except that:

(1) minors who have reached the age of 16 may be employed to perform busing, dishwashing, or hosting services in those rooms or areas of a restaurant, hotel, motel, or resort where the presence of intoxicating liquor is incidental to food service or preparation;

(2) minors who have reached the age of 16 may be employed to perform busing, dishwashing, or hosting services or to provide waiter or waitress service in rooms or areas where the presence of 3.2 percent malt liquor is incidental to food service or preparation;

(3) minors who have reached the age of 16 may be employed to provide musical entertainment in those rooms or areas where the presence of intoxicating liquor and 3.2 percent malt liquor is incidental to food service or preparation; and

(4) minors are not prevented from working at tasks which are not prohibited by law in establishments where liquor is sold, served, dispensed, or handled in those rooms or areas where no liquor is consumed or served.