Every year at about this time, when I organise our Red Pennant travel & health insurance, I receive a C&MC Camping Key Europe card.
Having removed the old one from my wallet for the first time in 12 months and thrown it in the bin, I put the new one in my wallet and then forget about it for another year.
What is the point of these cards and what am I supposed to do with them? Are they supposed to be left with the campsite owner instead of a passport? If so, my experience has been that they always request my ACSI card returning it when I settle the bill the evening before leaving.
Has anyone ever found these cards useful and if so, how?