If I remember correctly, it is the 2nd largest MB service center in the country. One in California is larger. Also, Ray is the second largest MB dealer in the country, the same one in California is #1.
The center is nice, but you have missed something if you've only seen it recently. When it first opened it also had a virtual golf room. You could use their clubs and golf balls and swing it at a large screen. After the ball hit the screen the image would show the ball travel over a "golf course" and tell you how far you hit it. It was converted to a reading room two or so years back. Under utilized, I guess.
Still, the internet PCs, free food, and pool table are fun. The PCs even have access to a camera to the sevice bays. If your car is within the camera's view, you can watch the staff work on it.
The great thing is the my Benz and smart go to the exact same center.