I was staying at Mandalay Bay for a conference and the Burger Bar was recommended to me by some coworkers.
We were lucky enough to find seats at the bar so we didn't have to wait. The happy hour menu is limited, but really good. I got a Mai Tai (delicious!), the hot wings (very good, but not exceptional), and the zucchini fries (AMAZING!). I went back later on that week and got the Cobb salad and that was incredible as well. My fellow diners had very good things to say about their meals as well. The happy hour sliders were 'very good,' the hangover burger option was 'awesome,' and their turkey burger was 'they best I've ever had.'