I have only been to Bouchon for breakfast/brunch, never dinner, but I have never been disappointed. On one visit to Vegas, I think my friend and I ate here every morning...
The atmosphere is fun, and I love the location in the Venetian because it's close to almost everything. I absolutely adore the beignets, and love dipping them in chocolate/nutella. Yum!
The food here is very heavy, so it can get to be a bit much, but it is oh so delicious. I generally order one of the specials, as they are always delectable. They always have an omelette of the day, and ordering this is always an excellent choice. The coffee is spectacular as well, and it's lovely to sit outside on the patio when the weather is nice.
I am looking forward to trying Bouchon for dinner next time!