Meh.
I've had better. There are so many buffets in Vegas, and this one is definitely on the lower side. It's almost $50 for dinner because they add lobster and unlimited wine, but it's still not worth it.
Service was INCREDIBLY slow... I asked for a refill on my water about two times before finally receiving one fifteen minutes later.
Food was okay, not bad at all, but not worth the price.
Desert bar was typical. Gelato, creme brulee, etc. Tasted yummy, but they have those selections in almost every buffet.
I love staying at the Aria, but I probably won't ever eat here again.
I recommend Wicked Spoon in Cosmo! Yum! :D