We had the same experience as Donna a few years ago in May. We arrived at about 8:15 and were the very first people there. The hardest part was figuring out where to start the line because it wasn't marked. We got into the Palace first and went straight to the Hall of Mirrors. We had it completely to ourselves for about 10 minutes, and it was one of our absolute favorite travel memories. The pictures we were able to take were just beautiful. One downside is that you can't backtrack, they only allow you to go one direction. So we finished the Palace and then returned to the beginning to see the rooms before the Hall of Mirrors that we had rushed through. By that time it was about 30 minutes after opening, and it was miserable. We were packed in shoulder to shoulder and had to move at the pace of the crowd. It was difficult to see anything. If I had it to do over again I probably would have just taken my time going through the first time, as I would have been one of the first to arrive to each room and would have arrived in the Hall of Mirrors before it was too crowded, although I can't say I'm really disappointed I did it the way we did, as the Hall of Mirrors was just spectacular empty. After that we never experrienced crowds the rest of the day. The gardens have lots of space and we enjoyed the Hamlet very much.