Been going there for quite some time now. It's a good spot to hang out before/after the game and at halftime. Free pop, pretzels, dessert bars, etc. There used to be free booze but I'm pretty sure drinks of that nature aren't allowed at the Barn anymore due to no drinks being allowed at The Bank. There's a buffet line if you need to grab a bite to eat, but that is not free.
Free coat check as well, which is nice.
As far as viewing the game goes, regardless of where your seats are, you should be in your seats. Not the best sight lines.