The wife found this place somehow and was desperate for us to check it out on our next visit to Vegas. I was a little hesitant but the Neon Museum was a home run in my book. They are basically a historical museum on neon signs and general Las Vegas history.
We had a little mix up with our tickets as a friend was joining us to do the tour but they were accommodating for us and all was made alright. I think that we planned everything just right as we got there at dusk and by the time our tour started, the old signs were coming back to life. It was really cool seeing all the old sign in various forms of repair. The cost of refurbishing a neon sign is significant so that it will be a long time before they can all be returned to their original glory. Our tour guide was enthusiastic and very knowledgeable on all things neon and Las Vegas.
It is out of the way, and a little pricy but I would return if we were visiting Vegas with people that had never been before. It's easy to combine it with visiting old Vegas and other things in the area.