The venue is physically as attractive as the Monte Carlo itself. Service (from floor staff as well as the chefs) was good as expected, but the food was squarely average, as good as an Old Country Buffet. Unless you have a buffet pass (we didn't have any, unfortunately), it definitely is not worth the price of admission (around $15, for something that's really worth $7). Beside the decent pasta bar and the salad bar (c'mon IT'S JUST SALAD), their pizza was blah, somewhat overcooked, and the asian selections (Chinese and perhaps Japanese-influenced items) were pretty tasteless. The chicken and prime rib were scarily dry.
If buffets are your thing, hit up the Bellagio buffet - it costs a lot more, but you get SO much more.