The business said Riley purchased and served a drink plus two waters. What Frat boy goes to Nashville on a special trip and orders water? He's chugging back water due to dehydration caused by too much alcohol. moo
We may never see the interior footage of Riley inside Bryan's. I don't need to see it to know he probably fell down in that place so they cut him off. Perhaps he fell down or caused some other chaotic event like bumped into a waitress carrying a tray filled with cocktails. The bar TOS are listed online. The pubs are tolerant until they're not. It's beginning to look like foul play may have been involved. Such a tragic event for all who love him.
GrayHughes has a chilling short video, taken from a livestream, showing a figure running away 2 minutes after Riley's last ping location. Maybe someone here can recall the clothes and such of any other features you've seen in Riley's cctvs that may closely align with this shadowy figure.