I give the Raiders Preview Center 5 stars on Yelp not because a tourist visiting Las Vegas should go out of their way to visit this place (unless you find yourself at Town Square shopping and are a big fan, then absolutely pop in). But it is great to have a central spot in Las Vegas for locals to ask questions, see the development of the stadium live in real time and interact with the history of this NFL team that is technically now a "Las Vegas NFL team playing in Oakland until 2020" when our stadium is complete.
The Raiders Preview Center is not large and can hardly be described as a "museum," but for the space, they have done a great job conveying the history of the team, coaches and players. Just enough to get Las Vegas fired up about the Raiders coming to town or brighten the eyes of a life long fan. The second floor of this building is where the sales team meets with people looking to purchase personal seat licensing, season tickets, etc. That part is not open to the public and you would need an appointment. We have purchased rights and tickets and the sales person who assisted us and the staff were all very welcoming, kind and knowledgable.
Again, not a place worth going out of your way to visit, but if you find yourself in Town Square and are curious about all things Raiders, stop by. There is no charge to visit and there is a valet stand right out the front door.