Make sure you request a table outside on the balcony. It's here that you get a fist class view of the Bellagio fountains.
Yellowtail has an amazing selection of Sakes, and a great twist on Japanese cuisine. My favorite dish of the night had to be the Big Eye Tuna Pizza with micro shiso and truffle oil. Our table ordered two plates of it at the end of the night it was so good!! The sushi was good as well, but not incredibly outstanding. Overall I would recommend Yellowtail and DEFINITELY recommend a table outside.