I parked there for a game last year since the guy I bought tickets from gave me a parking pass. Getting out of the structure wasn't a big deal really (it's a parking garage so my standard is based on that). My issue was that they would not let you turn left on Cumberland to get to Alcoa Highway and were making everyone turn right and into the madhouse of everyone on one road. You may have better luck if you are familiar with road closures or know your way around town.
Me, being from Nashville and not getting out there much, hated the leaving aspect. Not having the car be a bajillion degrees when you got in was nice and all but I do not plan on parking there again even if I have a parking pass. I am in search of an easy exit lot for games next year. I am going to have to go back through responses to a thread I made asking about parking a few months ago to figure out a better location.