It is the legislative intent that the following types of revenue-generating facilities at state parks shall be self-sufficient by the fiscal year 2007-2008: marinas, campgrounds, golf courses, cabins, gift shops, restaurants and inns. “Self-sufficient” means that the revenue generated at all such facilities collectively is sufficient to cover all of the direct operational costs incurred at those facilities. Nothing in this section shall be construed to automatically require the closing of any park or facility which is not individually self-sufficient.