I've been here twice now. Once in June and again in August. In June, I was obsessed with the Sweet, Spicy, and Salty Wings. I know what you are probably thinking: Chicken Wings at Fleur? Yes. And they are the best wings you have ever tasted. However, I was definitely disappointed that they were taken off the menu during my visit two months later. Also on my visit in August, the staff was really pushy about hurrying us through our meal -- they were taking plates out of our way while we were still enjoying some of the small plates. The food is really good. Some of the best: manchego salad, truffle fries, wings (if they get back on the menu) and the pistachio pavlova. It doesn't seem to get too busy but it is in the middle of Mandalay Bay so be sure to make a reservation just in case.
Also try the Blood Orange Margarita -- but be careful of the spicy salt rim!