The Buffet at Aria is not a bad place to go for brunch or dinner, but in a town where every major property features an extravagant buffet, Aria's version falls short.
I had brunch at The Buffet twice during my stay. The space is clean and well-kept and the layout is much more straightforward than many other buffets on The Strip. The selection, though, is relatively underwhelming compared to almost all other buffets I have been to (the lone exception being the smaller scale Cafe Lago in Caesar's Palace). The taste of the food is about average--definitely a step above Wynn (the worst of the buffets I have visited) but not quite as good as Bellagio and Paris. I would note, however, that the Eggs Benedict were a major disappointment, and I can't figure out how their "only Tandoor Oven in a Las Vegas buffet" comes into play.
Service was about par for the course--meaning too few servers trying to staff too many tables.