Recently saw Bruno Mars here on 08/22.
Supposedly the line started at 2pm even on a Friday night concert. My girlfriends and I lined up at 6pm. At around 7, the staff leads everyone into a smaller room and then the process to get in the actual venue begins around 8ish. If you have GA admission, everyone basically stampedes into the main floor as closest to the stage. There are two bars on the main floor, but are you really willing to lose your spot on the floor? Pick the smallest person in your group to grab drinks then have them make their way to you on the floor is what my girlfriends and I did. DJ Supra played for about 45 min playing hiphop/r&b 90's hits which I loved and then Bruno finally started to perform at around 9:40pm. Sadly, he only performed for about 1 hr and 10 mins (obvi not his usual concert set). He did a lot of cover songs, which I really loved and sang a few of his hits.
Overall, great concert experience especially at such a small venue so it's more intimate. He and his band are amazing and really gets the crowd pumped. I would def see him again here, but hopefully longer next time! We were about 15 ft away and can see him pretty well -I'd say it's pretty good considering we didn't line up till 6pm.
Lastly, if you want to buy his merchandise, there's a place for it right when you get out of the actual venue. The line can get long since they only had one register; some items can also get sold out pretty quick too. Hope this review helps!
P.S. the floor really shakes when everyone dances like crazy. :)