I absolutely loved the neon boneyard. I would now consider this a must see if you have any interest in old vegas. The visitors center is the lobby of the La Concha motel. It used to be on the strip. Thet cut the building in half...and more....to move it to its current location.
The tour guides are knowledgable and obviously love their job.
It takes about an hour to take the tour and its packed with information. Some signs are restored others are not. The signs range anywhere from early neon signs to the gigantic pirate skull from the Treasure Island.
I do not know if there is bus service to the museum, but its easily driveable (its on las vegas blvd north). It would also be a short cab ride from downtown. There is a small gift shop.
However you get there, it will be well worth the time and effort to visit The Neon Boneyard.