The venue looks like it has been around because it has been. It actually reminded me of the tired San Diego Sports Arena, which is not a good thing.
The acoustics could be better but that is to be expected for an arena, especially of this one's age. So, what is my point? The jist is:
1. Don't expect wonderful concert/music experience because of the acoustics.
2. Any other type of event, you'll really enjoy this venue.
It's not like you get to choose where you're favorite band is going to play...did Madonna call me to ask "Is MGM Grand Garden Arena okie dokie with you for my Sticky and Sweet concert?" No she did not....betch.
I wouldn't avoid a music concert at this venue but just be aware that the acoustics will be lacking.