Originally Posted by
Happy Feet
As far as booking campsites goes, I have given up. The system is a mess. I just show up and usually they fit me in. In the rare case there is no site each park has an overflow area where you can sleep for free so I just park there. They won't turn a cyclist away though.
Not specifically there, but in places where options were limited I have sometimes cruised the campground and found someone willing to share a site. I only resort to that in a pinch, but it has been an option when there weren't many other options.