Making reservations depends on how you feel about searching for a place to stay at the end of the day. The last thing I want to do after driving 5 or 6 hours is search for a nice place to park with full hookups, but that's just me. On many occasions I have been checking into a nice campground where I have a reservation, and seen other people turned away. If you don't mind staying in parking lots once in a while, then just wing it. In the holiday season and busy travel times, you definitely should make reservations. If you are retired, you have time to plan a trip, find nice campgrounds and make reservations.
