Came here after seeing the Conservatory all decked out for Christmas. Was thoroughly disappointed.
First and foremost, the service was hardly there. We waited roughly ten minutes for a two-top. Half the restaurant was empty. We were seated and it took our waiter an estimated 5 minutes or so to get around to even acknowledging us.
Once he did, he visited us roughly 4 times, including collecting the bill. The first time he came to the table, he curtly asked us if we were ready to order. I may be biased because a bunch of my friends back home were servers when we were growing up, but basic courtesy is something that should be there. Especially when two people are dropping $40 down on two bowls of French onion soup and one small and average tasting Cobb salad... AT BELLAGIO.
I've gotta say- Bellagio has this reputation as if it's got the market on class cornered in its favor... but after this experience, and seeing Palazzo/Caesar's/Venetian/Wynn, I'm thinking Bellagio is losing its status at the top tier.
Worth it if you have a coupon or get comped to come. Otherwise, go to Grand Lux Cafe for a similar menu style with more options- all of which are better prepared. And the waiters there treat you well.
In closing, we *NEVER* leave less than a 15% tip on anything. You pretty much have to call me a dick to my face to get a 15% tip, and we left duder 10%. I feel no remorse in doing so. AWFUL SERVICE.