AN ACT TO AMEND SECTION 51-15-123, MISSISSIPPI CODE OF 1972, TO AUTHORIZE THE PAT HARRISON WATERWAY DISTRICT TO OFFER DISCOUNTS TO ACTIVE-DUTY, RESERVE, NATIONAL GUARD, AS WELL AS VETERAN MEMBERS OF THE UNITED STATES ARMED FORCES FOR THE USE OF DISTRICT PARKS, CAMPGROUNDS, FACILITIES AND RECREATIONAL AREAS; TO PROVIDE FLEXIBILITY TO THE DISTRICT IN SETTING THE RATES AND TERMS OF SUCH DISCOUNTS; AND FOR RELATED PURPOSES.