Hi stator Welcome to the forum. Yes this is just for the card, you have to have the cheques put on they are £13.95 per cheque. A cheque gives you a pitch with electric and in a lot of cases water and possibly drainage. If you look on the Camping Cheques website you will get the full information.
I have got the Gold Card and have had it for about 8 years. It is renewed automatically with the points accrued over 3 years. There is also the bonus of free booking and at some sites a free bottle of wine.