I think you may also be crossing over school vacations.
I'm glad so many others live a clockwork life where they can plan things down to the day 6+ months ahead.
Those of us who do plan ahead don't necessarily live a "clockwork" life. Many of us are locked into vacation time well in advance due to competition for time off at our jobs. Juggling back-up coverage, projects, etc., causes many of us to have to pick a week well in advance. Campgrounds are booked so there's no worry about finding a place. Not all of us have the luxury of "hey, let's just go!".