Wicked Spoon is simply over-rated. The desserts are the best part and do leave a good last impression, but compared to the elite buffets of Vegas, Wicked Spoon doesn't have the quality, service, freshness, or variety to be considered 5-star. It's a-ok which is totally a-ok.
Sunday night dinner: 3 - 3.5/5 stars
There were no stations for fresh, made to order items like pasta, crepes, salads, etc. Instead portions are placed into small bowls like a cafeteria. There were no fresh sashimi or sushi offerings except two California rolls. The Snow Crab was average frozen fare. Salmon was meh. No XLB. Asian food looked like Panda Express.
On the positive side, Bone Marrow was cool (though not spectacular). By far the most spectacular section is the desserts. 2 flavors of macarons were chewy fun and Red Velvet Cookies were worth a try. Save room for the Gelato and get a couple of the huge Chocolate-covered Strawberries.
Service was fine. Our waitress brought drink (Mojito) re-orders and cleared plates as expected. She earned her tip.
If you are at the Cosmopolitan or nearby hotel then the Wicked Spoon is an a-ok option when in the mood for an AYCE Buffet