(a) A person who is 21 years of age or older may not consume alcoholic beverages during a school event at the site of the event if the event is expected to attract attendees under 21 years of age.
(b) A person who is 21 years of age or older who consumes an alcoholic beverage during a school event at the site of the event under (a) of this section commits the offense of consuming at a school event.
(c) Consuming at a school event is a violation and is punishable by a fine of $100.