May I have suggestions as to the campgrounds available to the Cinque Terra area and any suggestions as to the closest ones?
I don't think there are any right in the Cinque Terre, having looked for the same thing myself. The closest ones seem to be Camping La Sfinge http://www.campinglasfinge.com/ and Camping Valdeiva http://www.valdeiva.it/eng/default.asp
Hope this helps!
I have a hiking map of the CT showing only one camping site in the entire CT, at Manarola. No details given, just the symbol for camping. This map would not be available online, I bought it when I was there.