I think I've been spoiled by the excellent restaurants and quality of dishes I've experienced in Las Vegas living here. That being said this buffet was one of the worst I've been to in terms of freshness and quality of the items. The fish and chips had battered fish that was too thick and cakey/chewy. The strip steak was rubbery and had the taste of beef jerky. There was good variety of mediocre items, however. What saved the day and was phenomenal were the dessert items.
All in all not worth visiting, however unless you like quantity versus quality and are limited to Wynn.
I would recommend the prixe fixed menu at JardÃn instead in that case.