Came by early one evening and scored a nice table outside facing the Strip and the Bellagio fountains. You can't hear the music from the fountains, but it was a great meal. There isn't any traffic noise from the Strip which was a big surprise. Able to have a nice conversation at dinner. No exhaust fumes either. Furthermore, the space heaters kept us nice and warm. No reservations for the patio, but if you go early enough like we did at 5p, you can score a table.
The service was excellent. I had the french onion soup and red wine and pepper steak and fries. The food was very good. Dessert was excellent too.
Because the prices are pretty reasonable for a nice place in Vegas and the patio outside was so wonderful, I really recommend Mon Ami Gabi as as a dining destination in Vegas.