I had found that when I had awesome mod installed alone, and patched up to 1.29 with pets, I can no longer order drinks from the bar at my own lot and others cannot order from me.
I wasn't aware this was even possible, and nothing has been changed there, so it may have been EAxian.
AM makes the two professional bars break down and cry since 1.29. I've never had an outdated version of AM.
With only AM installed: professional bar works fine until someone is actually tending it with the "manage bar" interaction. Then, no one can order a drink. This also happens when hiring a mixologist to show up to your party. Dude just stands there and breaks glasses, then leaves with your money.
With zero CC: Bar interactions resume function again.
I considered tweaking my AM config in the hopes that one of the options might be at fault, but a) I am not that obsessed and b) nothing in the AM config seems even remotely like it would break the bar, so I'm at a loss.