Well, the primary difference would be that they have different menus. This is a lunch menu and this is a dinner menu.
I've eaten both lunch and dinner there and enjoyed both. It's a little less expensive at lunch time, but they don't have all the dinner entree options.
I've been for both - I prefer the Dinner menu 100%. i had the steak sandwich for lunch and it wasn't great...the Filet with Mushroom Risotto never dissapoints though...mmmmmm My vote is for dinner!
We couldn't get a dinner reservation this year so we're hoping that the mushroom filet they offer for lunch is just as fabulous as the one they offer for dinner.
I've been trying to get into Le Cellier for 2 years. I was FINALLY able to get a lunch reservation for my trip in April. I had to book it in January, lol.