Md. Code, Alcoholic Beverages and Cannabis § 1-401

(a) Unless otherwise provided for in this article or the Tax – General Article, a person may not:

(1) sell alcoholic beverages;

(2) allow alcoholic beverages to be sold;

(3) accept or deliver alcoholic beverages; or

(4) for the purpose of sale, transport, buy, possess, or keep alcoholic beverages or allow alcoholic beverages to be transported, bought, possessed, or kept:

(i) in a vehicle, a water vessel, or an aircraft;

(ii) on any premises; or

(iii) under the person’s charge or control.

(b) (1) Except as provided in paragraph (2) of this subsection, a person may not buy, possess, store, import, transport, or keep alcoholic beverages or allow alcoholic beverages to be bought, possessed, stored, imported, transported, or kept:

(i) in a vehicle, a water vessel, or an aircraft;

(ii) on any premises; or

(iii) under the person’s charge or control.

(2) A person may perform an activity listed in paragraph (1) of this subsection if the person is:

(i) a consumer;

(ii) subject to the requirements under this article, a license holder; or

(iii) an individual under the age of 21 years who possesses or is transporting alcoholic beverages for a lawful purpose:

1. with the knowledge and consent of the individual’s parent or guardian; or

2. incident to the lawful employment of the individual under this article.

(c) Except as provided in § 1–411 of this subtitle, an individual under the age of 21 years may not:

(1) buy, consume, possess, store, import, transport, or keep alcoholic beverages for the individual’s own use; or

(2) buy, possess, store, import, transport, or keep alcoholic beverages for any purpose in a jurisdiction where prohibited under State law.