It can be very loud, even when half full. If you're a bro, and headed here with other bros, the environment is excellent. Perfect for your "Yeah Dude/Yeah Bro" comments every three seconds, followed by some sort of handshake/pound.
The food was excellent. Service was excellent. Beer was a tad on the warm side, but I'm not one to be picky. Very much like the one in Munich.
I would say the only deterrent here would be the noise. Other than that, definitely go if you're in Vegas if you like German dishes.