I can only speak to the brunch buffet, but considering it's the Wynn and pretty chi-chi, I was expecting... well, more, I guess. For $20 a pop, I wanted either to have my tastebuds totally blown away or at least a wider assortment of dishes. I was looking for more of "the good stuff" like crab legs or shrimp or even a crab cake, that you'd think you'd find at fancier brunch buffet, but I guess those are reserved for the dinner service.
The omelet guy was the highlight. I always make a beeline for the omelet guy. The jalapeno eggs benedict was pretty tasty, too, --- though it was kinda cold and the egg rather tough, like it had been sitting for a little bit. Everything else was good -- the pastries, the bacon, et al.
There was an inordinate amount of Asian and Indian cuisine for a brunch and I wasn't sure why. I have no problem with either of those fares -- all tasty and good -- but it wasn't what I was seeking in brunch. There was a lot of cold squid and mystery fish sauces and things of that nature. So if you're from those places or are just really into a more exotic 11am menu, you might be into this buffet. I skipped most of those things for... well, let's not kid ourselves... more bacon.
Our cashier never asked if we wanted mimosas or champagne or anything, but our server added it on for us at the table without issue (thanks very nice server whose name I can't recall!)
We only really came here because we had a friend who had never been to Vegas before and wanted to take him to a higher-end Vegas buffet experience, and while everything was good, it just didn't make me all that excited to return or in a hurry to recommend it. I'm guessing there are a lot of great buffets in this town.
I'd love to get that jalapeno hollandaise recipe, though. That was pretty tasty.