It was appropriate that the areas closest to the stage at last night’s Brothers of the Sun show at Browns Stadium were called the “sand bars.” While they weren’t literally coated with sand, they might as well have been. The concert featuring co-headlining country singers Tim McGraw and Kenny Chesney was as much beach party as it was musical concert. Fittingly, Corona was the beverage of choice, and frozen margaritas were a popular option, too. Too bad the security personnel didn’t get the memo — for some reason, they confiscated beach balls throughout the evening. Still, that hardly put a damper on the festive vibe.