The grounds are very large, but they do offer golf carts for rental if you want to see some of the building farther away. Beats walking and is much faster.

Boating on the canals is fun as well.

You can get a pass to major attractions in Paris that is good at Versailles as well. Then you do not have to stand in line to get your tickets. We got one at the Arc de Triumph were there was no line.