I have seen my fair share of concerts. I've been to venues on the east coast from Maine all the way to New Jersey. Outside, inside, 60,000 people to a few thousand. This arena is small and intimate. Probably holds roughly around 10,000.
I caught Roger Waters, The Wall 2010 tour stop here and enjoyed every second of the concert. The arenas acoustics are well balanced. I was in section 5 and the sound was near perfect. Roger brought along his own surround sound speakers for this tour and was well mixed in the arena. The sight lines to the stage in the section are perfect. The are no obstructions and I was able to catch all aspects of his multimedia spectacle and stage presence from this view. I would say there are not bad seats in the house. Unless its a stage set up and your along the side close to the stage. Still good though to be up that close in my opinion. Boxing definitely has the best set up here. This venue has held many famous UFC and boxing events in the past.
Everything was close to the seats. Obviously there was a line for the bathrooms. And there are plenty of concession stands for food and beverages. Security is brief getting in. Only a quick pass though a medal detector. Not sensitive at all. You can keep everything in your pockets. I saw that ushers were efficient in pointing you towards your seats. You can park in the garage or valet I guess. MGM Grand is so frigging big It takes a while to find where your are going or parked.
I would come back in the future to check out another event. Hopefully would like to see a boxing event here.