If you are driving to your campsite, it is strongly recommended that your car is fully serviced ten days before departure so that any problems can be identified and rectified before you leave. You should also let your insurance company know you are planning to take your car abroad to ensure you are covered. Some insurance companies may make an additional charge for this.
Before you set off, check the tread and pressure of all tyres including the spare. As your car is likely to be fully loaded, ensure that the tyres are inflated to the pressures recommended in your car handbook.