My parents went to Wing Lei last year and did not have an enjoyable meal. They mentioned it to the concierge who told them that they had actually been hearing that a lot lately. When my parents went back to the Wynn a few months later, the concierge actually gave them a comped meal at Wing Lei, which they said was substantially better than the first meal, with excellent service. So I'm inclined to think that there was some sort of severe dip in quality that has since been corrected.