I booked a vacation through Southwest. that included a free buffet at Aria. I loved the rooms at Aria, but the buffet was terrible. If I eat at a buffet in Vegas, I usually go to to the buffet at Wynn, which is excellent. The prime rib at the Aria was more like a Sunday night roast, and the rest of the entrees were marginal at best. I thought the food and service was so bad that I would not  eat there again even if they offered it for free. Maybe that's the reason they included the free buffet as part of the vacation package! Really disappointed in the quality and service for such a nice hotel.