Well you know your kids best and how well they do at restaurants! Personally, I think at WDW there are very few places that you just can't take kids, Victoria and Alberts and Shula's come to mind. We have eaten at Le Cellier and I had my kids (they were older) but I did notice that there were lots of kids there the night we ate there. At WDW, nobody expects to eat a quiet meal with no kids nearby at any restaurant! And since Le Cellier is one of the most popular places and a good deal on the Dining Plan, its always crowded with many people, especially families. You can have sometimes longer waits to get seated at Le Cellier (even with an ADR) because its so popular, so you might want to consider feeding your kids something beforehand.