All businesses that sell gasoline or diesel fuel shall require payment in advance of sales of fuel prior to activation or authorization of any fuel dispensing unit or fuel pumping device. Prepayment may be made by cash, credit card, debit card, check or any other legal means. The provisions of this Subchapter shall not apply to full-service gasoline or filling stations defined as businesses that: (1) maintain an attendant outside the business premises to operate and supervise the operation of the gasoline or diesel pumps, and (2) sell oil, tires and other automotive accessories, or (3) make repairs to motor vehicles in repair or service bays located on the site of the business.