I haven't experienced live music here, but I have experienced a mamma jamma of a Super Bowl party and my first ever in-person boxing match. Both events were hassle-free and comfortable, which is really what you need in an event venue!
For the Super Bowl party, I was blown away by both the event production (quite possibly the biggest screen I have ever had the honor of watching an athletic event on!), the service, and the food. I was literally like a kid in a candy shop wandering around and snagging all of the delicious foods from potato skins to sliders.
The boxing match wasn't a maximum attendance event. I would say there were about 8000 people, and parking was absolutely no problem. I was really shocked to park, get in and get out without the slightest wait. Plus, all of the staff from ticketing to security went out of their way to create an effortless experience. Even with a mix up in our tickets they managed to make everything work out!
I will have to wait for a live music experience to determine if the Arena deserves a 5th star, but so far, so good MGM!