Miss. Code § 97-5-11
No person under the age of eighteen (18) years shall be allowed to enter and remain in any poolroom or billiard hall except that municipalities shall have the discretion to establish a lower minimum age. However, no person under the age of eighteen (18) years shall be allowed to enter and remain in any poolroom or billiard hall in which beer is sold or consumed. No owner or manager of any poolroom or billiard hall, and no agent or employee of any such owner or manager, shall permit or allow any person under the age of eighteen (18) years to enter and remain in any such poolroom or billiard hall except when a municipality has established a lower minimum age, and provided that in such municipality beer is neither sold nor consumed in such poolroom or billiard hall. Any manager or owner of any poolroom or billiard hall, and any agent or employee of such owner or manager, shall for each offense, upon conviction, be fined not more than one hundred dollars ($100.00).
For the purposes of this section, a poolroom or billiard hall shall not be deemed to include a place of amusement, either for profit or otherwise, wherein the operation of pool and billiard tables is not the main attraction held out to the public, or the primary amusement engaged in by the participants and wherein less than fifteen percent (15%) of the gross revenue derived directly from the operation of such amusement or recreation center within the same room or immediately connecting and adjacent rooms shall be derived directly or indirectly from the operation of such pool or billiard tables and further, all nonprofit corporations, associations and organizations, and educational and religious institutions, shall not be considered as operating poolrooms or billiard halls for the purposes of this section.
Miss. Code § 97-5-11