Act as alternative method – Application of Bond law – Powers not subject to supervision or regulation by other element or government. The foregoing Sections of this Act shall be deemed to provide a complete, additional and alternative method for the doing of the things authorized thereby and shall be regarded as supplemental and additional to, and the limitations imposed by this Act shall not limit or otherwise affect powers or rights conferred by other laws, and the issuance of Bonds and refunding Bonds under this Act need not comply with the requirements of any other law applicable to the issuance of Bonds. Except as otherwise expressly provided in this Act, none of the powers granted to the Authority under this Act shall be subject to the supervision or regulation or require the approval or consent of any municipality or political subdivision or any department, division, commission, board, body, bureau, official or agency thereof or of the State.