The bill expands the Port St. Joe Port Authority to include Franklin, Gadsden, Gulf, and Liberty Counties, revises the governing body's membership, and provides for staggered terms. It empowers the authority to employ an executive director and outlines their powers including acquiring, constructing, and operating port-related facilities. The bill also establishes limitations on the authority's power to bind the involved counties or the City of Port St. Joe. Additionally, it allows local governments to appropriate and contribute funds to the Port Authority. The bill's minimum charter requirements are set to take effect upon becoming law.