My goal was to check out campsites on a very busy weekend and I learned many things.
1) before choosing, and many require reservations in advance, you must study up well – the book I had was entirely inadaquate to usefully distinguish one campground from another.
2) the tents-only campgrounds that you can reach by car are more crowded and less pleasant than the multi-use ones that include trailers and rvs.
3) campgrounds in the National Forests are better (quieter, larger sites) than those in the parks, but without facilities.
4) it looks do-able for anyone who wants to be there.