When we first pulled up I was surprised at how small the 'boneyard' looked from the outside but they did a beautiful job at maximizing the space and allowing the signs to be viewed.
Opted for the daytime tour however I've heard the night tour is very beautiful but not every sign is restored and lit.
Our docent was VERY knowledgeable about the structure of the signs, the history of the hotels, architects, and Las Vegas history of a whole.
I really enjoyed this tour. Glad we went during cool weather - being from the same general climate zone (AZ) I knew we would survive a daytime visit mid-March. :-)
Bought the combo ticket for this and the Mob Museum. Recommend to see this first as the tour lasts about an hour and then head over to the Mob Museum.