On the subject of operating hours: I think you know well how this is calculated.
When attendance levels drop, operating hours drop with them keeping in mind ride capacity. When attendance spikes unexpectedly often the parks are kept open for an hour or two so the guests get a chance to visit more attractions.
You don't mention the up side.
To pretend that you don't know this is disingenuous at best. But, let's not let facts get in the way of your phoney "advocacy" and the oportunity to sell your books.