Racheal - what sort of site are you looking for? Do you have children with you - and how far do you want to travel? Sites immediately around Dunkerque are not the best - so if you're looking for beaches you may be better going further afield.
If you're just looking for a campsite with good facilities then there are some inland sites, such as Chateau du Gandspette (which takes Camping Cheques, and would cost only
We will be returning in early July from northern Germany, using Norfolk Lines as opposed to our usual P&O route. We will only need an overnight stop at the coast. Looking in the Caravan Club Europe 2 guide for a site near Dunkerque, there is Camping Kingervreugde, listed under Die Panne.
Has anyone used it or does anyone have any recommendations for a site convenient for the port?