The roads are closed because otherwise thousands of cars turn up and do irreparable damage to the fragile local environment. They also cause huge congestion and prevent emergency services from getting to the beach in case they are needed.
So the usual park and ride system is in place. Park in a large carpark (or round the back of the villas) and catch the bus to the beach of your choice.
For the first time, you can’t sail there either – offshore mooring will be limited due to sea congestion last year. Sea mooring areas will be in effect and if they are full you won’t be allowed to stop.