I'm in Georgia too in Hotlanta where the temps are high late into the night. With my top cover ventilated, a screened bottom board, and room to grow in the supers, my hives have been growing bigger beards every night. MB and Finsky and Brian and others give feedback making me think this is all normal if you've met the above needs for ventilation and room to grow. It's just hot here and they need to keep the interior of the hive at the right temp so extra bodies move onto the front of the hive to keep the interior from overheating.
Sometimes it looks like a barndance on the front of my hives.
I've recently added robber screens and they pile up inside the screen between the screen and the hive, so not much dancing is happening these days. Looks like they're playing the 70's game of "phone booth" instead.
Linda T in Atlanta where the hives are hot