I was preempting the flood of questions as to how to get to their battery. Yes I know as do many others it was done to make people think before they disconnect the battery. Many people do not have a usable garage, driveway or off road parking for their vehicles making it very difficult to get mains power to the car to charge the battery. The easiest option is a solar charger ( no do not work for a manufacturer of them ) that can be left plugged in, provided there is enough light for the panel to work. I would not recommend leaving a second battery or a jump pack permanently connected either. Jump pack, jump leads and plug in lighter socket leads on;y really to get the engine running.
I suggest everyone has a practise run to find where the tailgate emergency release is, how to use it and that it actually works. Beter to know now than find a problem when you need to use it. Also worth finding the fuel flap emergency release if the drivers door microswitch or b pillar button fail. You will find this behind the right hand rear lights access panel where you will find the metal rod on the actuator, pull down on the rod to release the fuel flap.