R.I. Gen. Laws § 21-28.11-27.1: No minors on the premises of marijuana establishments.

A cannabis establishment shall not allow any person who is under twenty-one (21) years of age to be present inside any room where cannabis or cannabis products are stored, produced, or sold by the cannabis establishment unless the person who is under twenty-one (21) years of age is:

(1) A government employee performing their official duties; or

(2) If the cannabis establishment is a hybrid cannabis retailer that also holds a compassion center license pursuant § 21-28.6-12 for the same licensed premises and the individual under twenty-one (21) years of age is a qualifying patient registered under chapter 28.6 of this title and the retail establishment complies with applicable regulations promulgated by the commission.