I have only driven to Calais for kind of day trips with my family. But now this Summer I want to drive bit further may be for few days. Problem is that I have five kids ranging from 2 to 15 years old so staying in hotels or BB would be expensive. I have no experience of camping. So what are the other cheaper options? And do you have to book in advance all the time? And where are the places with a bit of history, scenery and nice drive etc.