The Wynn is a beautiful and classy casino with posh stores like Chanel, Cartier, and Ferrari-Maserati stores but it's just a bit too pretentious for me. The do have some good restaurants with great views of the waterfall area where they have some interesting eccentric shows every hour or so at nighttime.
Bottom line: Beautiful. Except for the Wynn buffet, Tryst, and some the restaurants there, I find it a bit too much and not really for me. I much rather be at Venetian or Caesars. (Didn't stay in the rooms though.) 3.5 stars.