Should I make reservations or wing it?

When we first started, we travelled far and wide with no reservations, stayed at a lot of state parks and COE campgrounds with no problems. Now, however, with the increase in RV travelers, reservations are almost required for weekends. Plenty of places during the week, but weekends are almost impossible. Many places sit empty during every week because all the sites are reserved for two days, weekend only, so you have to leave and go to Walmart for the weekend. And many places will only take three day or more reservations for weekends. Many private campgrounds still do have some weekends available, but either call first or make reservations far in advance.