The Director shall establish and collect fees and charges for the use of camping and recreational facilities. These revenues shall be pledged to pay the principal of and the interest on revenue bonds issued under the provisions of this chapter. The fees and charges shall be established and adjusted in respect of the aggregate fees and charges for the camping and recreational facilities the revenues of which shall have been pledged to provide a fund sufficient to pay (i) the cost of maintaining, repairing and operating the facilities unless such cost is otherwise provided for, (ii) the bonds and the interest thereon as the bonds become due and (iii) reasonable reserves for such purposes. Such fees and charges shall not be subject to supervision or regulation by any other state commission, board, bureau or agency.