Service was fantastic, food was subpar.
Boyfriend and I opted for the "Jaleo Experience" tasting and I personally don't think it was worth the price at all. I've had much better tastings at the same price point. I have also been to the Jaleo in Washington DC which far surpasses this one in terms of the quality of the dining experience.
Almost every dish we received was over-salted. Nothing stood out as particularly memorable, though we made the most of it and enjoyed trying new things we typically would never order.
Our servers were great, taking the time to explain each dish and being very prompt with any requests we had. It was a shame the food wasn't as nearly as enjoyable.
With so many other great restaurant options on The Strip (and even in The Cosmopolitan alone), pass on Jaleo.