Yes! You are welcome to sit anywhere outside your vehicle, in lawn chairs or on blankets.   We only ask that you place lawn chairs and blankets in front of your car, and not to take up an additional parking space next to your car.  This is also for safety reasons as an approaching vehicle looking for a parking spot might not be able to see you or your children sitting on the ground!

Also, if you are sitting on the roof of your car, truck or SUV you cannot be so high as to obstruct the view of a person sitting behind you while they are seated inside their own vehicle.  

Just use common courtesy and everyone will have a good time!