Florida State Park feeding frenzy

In understanding how businesses work, I think you are comparing apples and oranges here. I don't know how it is in Michigan, but State parks in Florida are not run like private campgrounds. They do generate money into the economy in other ways, but making enough to sustain the park and pay salaries through campground and entry fees could be vary year to year. Volunteers help defray costs, but I still don't think that would do it.
If any business is running off of fees paid in advance and you use up that money, what happens the next year when things are not that good.