As used in this article, the following terms shall have the
meanings indicated:
GUARDIAN
A person who has qualified as a guardian of the underage
person pursuant to testamentary or court appointment.
RELATIVE
The underage person's grandparent, aunt or uncle, sibling,
or any other person related by blood or affinity.
The consumption or possession of alcoholic beverages of any
type on private property by a person who is under the legal age and
without legal authority is prohibited.