The food here was underwhelming and over priced, while the restaurant itself is very dark and obnoxiously loud. Underwhelming enough that I don't remember everything that I tried, over priced enough that it's 2x - 3x the cost of the same dishes elsewhere, dark enough that phones/flashlights are required to illuminate the menus, and loud enough that you'll be yelling at the person sitting across from you.
I ordered the pad thai and had a chance to try the fried rice and some other dishes, and they were all forgettable. Much of the menu consists of standard rice, noodle, meat and seafood dishes that you can find at other Asian restaurants. The most memorable thing was the dessert platter that was brought out to celebrate an anniversary; pic: http://www.yelp.com/biz_photos/tao-asian-bistro-las-vegas#qI9V2F49kHQExsdTIycXpg
Can't really see myself coming back here. There are better options within The Venetian/Palazzo to dine at.