Be patient – accept that it'll take a long time to get out of the car parks – up to several hours at some events – and especially on mud, you won't be going anywhere in a hurry, so be patient and offer help to those who need it.
The right footwear – don't drive wearing muddy wellies as your feet could slip on the pedals – put on some clean shoes.
Try not to spin the wheels – pull away in second, not first, gear where possible to aid traction (lower revs help prevent wheel spin) – or in larger automatics, select 'D2' – and just use the accelerator very gently.
Traction aid – cardboard placed in front of the driven wheels will help aid traction (car mats can be used as a last resort!).
Keep moving – once moving, try to maintain momentum, especially if on an incline.
Stay on the flat stuff – try to stay out of 'tramlines' created by other vehicles, particularly if they're full of mud.
On tow – if you need a tow, check the towing eye for corrosion or weakness (it is often hidden behind a small plastic panel on the bumper).
Work out a plan – make sure you know where the person towing you intends to go and keep a close eye on them – agree on hand signals or other means of communication to make sure everything goes smoothly.
Slow and smooth – avoid sudden movements when towing – the person towing should ease away slowly bringing the rope under tension before proceeding.
You will see a dedicated AA team at many of the big events this summer – remember that they're there to help if you get into difficulty or your car breaks down.
We also try to deploy our Special Operations Response Team (AA SORT) to events or areas where large numbers of vehicles are likely to be affected by severe weather.
According to Darron Burness, Operations Manager for AA SORT, "Things are never rushed at a summer festival, never more so than when you're sliding around in the mud!
"But, there are a few tricks that will help drivers get to grips with the conditions. First of all, put on some clean shoes – no driving in muddy wellies – and take it easy with the right foot. Try pulling away in second gear to reduce wheel spin and, if you get stuck, placing some cardboard in front of the driven wheels can help regain grip or even car mats can be used as a last resort!
If the car park is gridlocked by cars, be patient and switch off your engine when appropriate to save fuel.
AA patrols were in the thick of it at Glastonbury festival in 2011 where the car parks were muddy even as people started to arrive.