S.C. Code § 43-25-70
The commission is empowered to operate concession stands in any State, county or municipal building and in any State park and shall negotiate with the proper agency or governing body regarding the establishment of a concession on such property. In buildings where a stand existed on May 25, 1940, the person who was then operating such a stand shall not be removed, but when such operator ceases to operate such stand the concession for further operation shall be granted to the commission. No rental or other charge shall be required by the commission for the granting of an operation permit. Any rental payment or commission charged by the owner of private property for the location of such a stand shall be collected from the operator of the stand by the commission. No charge shall be made for the installation or operation of a concession stand or for the maintenance of equipment of a concession stand regardless of location.
S.C. Code § 43-25-70