1. DON’T BREAK THE LAW
The possession, sale, use, or consumption of ALCOHOLIC BEVERAGES, while on chapter premises or during a fraternity event, in any situation sponsored or endorsed by the chapter, or at any event an observer would associate with the fraternity, must be in compliance with any and all applicable laws of the state, province, county, city and institution of higher education, and much comply with either BYOB or Third Party Vendor Guidelines.
In other words; it's pretty simple: the drinking age is 21 in all states, and anyone (a member, new member, or guest) who consumes alcoholic beverages underage runs the risk of trouble. In additon, chapter functions (which can be any event an observer would associate with the organization) with alcohol present must abide by either the "Bring Your Own (Alcoholic) Beverage" policy or must use a third party vendor. Simply put, chapters do not have liquor licenses and therefore cannot provide alcohol.