In the Chilleen Bar, the female owner who would often get drunk (to the point that she didn't even remember meeting Jon Taffer the previous day) is told by Taffer that he would leave if she had any alcohol when he was there. During a bad stress test and some clear signs of alcohol withdrawal, a group of regulars try to get her to drink with them. She turns them down. Even Taffer was impressed with this.
Her husband too also deserves a mention. Like her, he was also going through withdrawal symptoms during the stress test, having nervous handshakes while trying to make and serve drinks. However, he pushes through without stopping, even managing to take up some of the slack left behind by the bartender Yum Yum's Rage Quit. By the night of the relaunch, he's managed to stay sober, and is working confidently behind the bar.
And the family's awesomeness continues on with their daughter, also a bartender there. While she wasn't dealing with drinking problems like her parents, she does prove how much she cares for her family. She works well together with them, and doesn't complain once, regardless of how difficult things got, and is clearly having fun. This family seems to be source of Crowning Moments of Heartwarming, Awesomeness, and Determinator together.
In another episode, one of the bartenders is caught drinking behind the bar, and she's instructed to clean up or get fired. She also has clear symptoms of alcohol withdrawal, but pushes through the entire stress test anyway. Moreover, she manages to keep a smile on her face and serve her drinks accurately and quickly. Considering the symptoms of alcohol withdrawal syndrome, that's really impressive.
Taffer standing up for his chef expert to the point of almost punching the owner of ZanZBar who called him "fatboy."
Anytime Taffer rants against the owners of "O'Face Bar", the only establishment to date that he refused to rescue because of the sheer amount of dysfunction.
From Headhunters, Taffer's opening line before he starts showing how unsanitary it is:
Taffer: Let's see what happens when an idiot defends failure!