I love Carnevino. My partner and I are huge Mario fans. Both times I've been in Las Vegas I've made sure to visit. Our first experience in 2008 or 2009 was amazing (5 stars). Great waiter who helped us find the perfect wine for our meals. He was by far the best waiter I've ever had. The filet and steak tartar just blew me away. This year, I went to Carnevino after having a meal at Cut (I had the Waygu beef so I know it's not a fair comparison). The waiters at Carnevino were less friendly this time-younger and seemed less experienced. They were a little snobby, which is really unfortunate. The meal was great but it did not blow me away like the first time. We accidentally received wedges instead of greens (which they kindly gave us for free because of the mix up). I remember the dry texture of the wedges and for some reason that's what I taste when I think of Carnevino, and that makes me sad.
I don't have pity for the reviewers that said their beef was undercooked. Steak should be served medium-rare and if you don't like it that way, I think you should eat your steak at home. Haha.