We love going to the Burger Bar in the Mandalay Bay.  You build your own burger.  Pick your bun, meat, toppings and condiments.  I usually get the Angus beef with pepper jack cheese, grilled onions and mushrooms, lettuce, tomato, pickle, mayo, ketchup and mustard on a wheat bun.  Our favorites are: skinny fries, onion rings, sweet potato fries, the sliders and the chocolate or vanilla milkshakes - oh my!