Went with some friends. You take a bus from Incline since there is no parking for the tour at the lodge. They play an informative audio both to and back.
We started in the newer part of the lodge with a brief history and then the tour started. Since they have functions here you can go most anywhere within the lodge. Not like some tours where you can't touch things, walk only on a certain path etc.
The lodge is spread out so there is a lot of walking and steps. You walk through a 600' tunnel to the boathouse where you get to see the 50' Thunderbird yacht.
This is really a basic lodge and there is not a lot of opulence like Hearst Castle. But it is a neat thing to do if you have some time in Tahoe.
Overall the tour was informative and we enjoyed it