It has been a long time since I last visited Mon Ami Gabi (probably 2 years), but it popped up on my "have you been to..." suggestions, so I'll review it! The absolute best thing about the restaurant is its location. The Paris got really lucky when the Bellagio opened and built beautiful fountains out front - now many of their restaurants (like Mon Ami Gabi and the Eiffel Tower Restaurant) have a phenomenal view. Be sure to request a table on the patio where you can see the fountain show...it's definitely worth waiting for, and you can drink at the bar while you wait!
I give this restaurant three stars because I remember feeling underwhelmed by the food. Everything was tasty, but for a restaurant in a prime location at the strip, you usually expect something special. I had a New York strip, their fries, and we shared a bunch of appetizers that I honestly can't remember anymore. It was a fun experience and perfectly fine food...I would go back happily (but probably wouldn't be the one suggesting it).