After 60 years of road trips habits are hard to change. I only make reservations under duress or one day ahead. I prefer the off season for long trips and move when I feel like it.
The idea of a tight schedule and having to be somewhere has no appeal at all. In the West there is always some public land around. It allows great freedom, but people from the East take time to adjust to it.
Recently it seems there are no refunds at a lot of RV parks. That makes them unattractive to me except for filling and emptying tanks, powering up and taking a shower and washing clothes.