The MARINA Act aims to revise the financial and operational framework for marinas leasing federal lands from the Corps of Engineers. It mandates that the Secretary of the Army, through the Chief of Engineers, modify the calculation of rental amounts for covered marinas. Specifically, the bill requires the exclusion of "combined covered receipts" from the total gross receipts used in the Revised Graduated Rental System, applying a maximum rate of 1 percent to these excluded items, which include sales of food, beverages, fuel, boats, and expensive boat-related items. Furthermore, the legislation directs the establishment of a standardized fee schedule for administrative fees across all Corps of Engineers districts. This schedule imposes strict limitations, capping fees at $50,000 for major land disturbance activities or large lease expansions, $5,000 for moderate review efforts, and $1,000 for other activities. Crucially, the bill prohibits the assessment of administrative fees for standard lease renewals, extensions of lease terms, or activities related to lease transfers or sales. Additionally, it extends minimum lease periods to not less than 50 years for initial or first renewal leases and not less than 25 years for subsequent renewals, and restricts the Secretary from requiring marina operators to pay employees above the federal minimum wage, except as otherwise required by law.