I visited this WHS in August 2012 by car. I went there early and bought the tickets online to avoid long queues. There still was quite a queue already at 08.30 although the palace opens at 09.00. I explored the royal courtyards and gates before entering the historic palace. The Hall of Mirrors and the Queen's Bedchamber were the highlights of the Palace although crowded. However, the highlight of this WHS for me are the enormous gardens with fountains and the canal. I walked to the Petit and Grand Trianon and visited both together with Marie Antoinette's Estate and the Queen's Hamlet away from the crowds. Very peaceful to walk around and interesting monuments (such as the Temple of Love).