Money in the promotion and development fund shall be spent by the commission or as the commission may direct to pay any expenses connected with:
(1) any activity or matter incidental to the advertising, development, or promotion of the district or its ports, waterways, harbors, or terminals;
(2) furthering the general welfare of the district and its facilities; or
(3) the betterment of the district's relations with steamship and rail lines, shippers, consignees of freight, governmental officials, or others interested or sought to be interested in the ports, waterways, harbors, or terminals.