I've been to the Mandalay Bay Buffet many times, and the quality has definitely gone down over time. My favorite is always the prime rib when it's cooked just right at medium rare. The crab legs are good, but they are not normally fresh and the shells are soft which makes them really hard to open to get that one piece of meat. I remembered their dessert used to be better also, though their bread pudding is still very delicious and about the only dessert I eat there now.