The State of Georgia fully occupies and preempts the entire field of regulation over limousine carriers as regulated by this article; provided, however, that the governing authority of any county or municipal airport shall be authorized to permit any limousine carrier doing business at any such airport and may establish fees as part of such permitting process; provided, further, that counties and municipalities may enact ordinances and regulations which require limousine carriers which are domiciled within their boundaries to pay business license fees.