Do yourself a favor and have brunch here on the last day of your trip. There's no casino at the 4 Seasons, so it's good for when you're almost tired of Vegas.
Second best brunch buffet I've ever had (Foundry Grill at Sundance still wins). Everything is fantastic. The donut station achieves greatness. The new Bloody Mary bar was a pleasant surprise. This place delivers on so many little details...grind your own honey nut peanut butter...jam from Austria...corned beef in a tiny cast iron skillet. Great experience.