Sales of meals, drinks, etc., by railroads, airlines, pullman, steamships, or other transportation companies within this state are subject to the sales tax.
Meals, etc., served by such transportation companies as a part of the transportation service, for which no separate charge is made, are not required to be reported as retail sales by the companies. In such instances the companies are considered to be the consumers of the foods, etc., served and will be required to pay tax thereon to the suppliers.
S.C. Code Regs. § 117-305.7