Parking anywhere near a beach is difficult in the holiday season especially in August when visitors are at a peak. For those who live near a beach it can be a nightmare each summer as people block the access to their houses. They also block access reserved for emergency vehicles and for buses and taxis.
Up to now, there has been nothing that could be done to remove the illegally parked cars but that is about to change because by this September there will be a municipal tow truck on the coast and a pound where the cars can be taken. So if you park across a driveway or in a reserved spot in future, you may return to find your car gone. It will then be a long walk to reunite yourself with your vehicle.
Of course, it would have been so much better if people had respected the no parking sings in the first place but then that is human nature. Some people are just plain selfish.