Well, aside from Victoria & Albert's in the GF, *all* Disney restaurants are kid friendly. But, some friendlier than others, I suppose.
As far as Le Cellier goes, I don't think you'll run into any problems there.
The only two things that might go wrong are:
1) The tables are *very* close together, and this can be distracting for some little ones and
2) There are NO windows. It's supposed to be a recreation of a wine cellar, and that can lead to a touch of claustrophobia in some kids, and adults as well...
I'm sure if you search you can find plenty of pics of the dining area to help you decide.
If you go, don't miss the cheddar cheese soup...it's amazing.
