twice, but never on a scheduled tour.

We were there in 2010, but were not going to be in Tahoe when the tour was scheduled. An accommodating security guard/guide took our party of 6 through what's left of the tunnels, through the Indian Room, and Frank Sinatra's Celebrity Showroom. Cabins #3 & #5 (Frank & Marilyn's cabins) were occupied...so we didn't go into those. We did go through the cabins when we were there several years ago.