Le Cellier formal at all. To me the tables are a bit close but there is a general buzz from all the people in the area. The buzz means that people with kids that not always use their inside voice, like mine, are not disruptive to others.
Your kids should be able to find things to eat. Here's the menu from earlier this year:
Beef & Macaroni - Made with marinara sauce and topped with mozzarella served with veggies and fruit salad. Includes choice of juice, 1% milk, or bottled water. French fries and soft drinks available upon request. - $7.59
Kids Picks: Choice of 1 appetizer, 1 entree, & 1 dessert - Appetizer: Carrot & Celery sticks or Canadian Cheddar cheese soup. Entree: Pasta with tomato sauce, Hot Dog, or Grilled Steak (add $2.00). Dessert: Fruit cup or Ice cream. Meal served with choice of juice, 1% milk, or bottled water. French fries and soft drinks available upon request. - $7.59
Pizza - Made with mozzarella and diced chicken (optional) served with veggies and brown-sugar apples. Includes choice of juice, 1% milk, or bottled water. French fries and soft drinks available upon request. - $7.49
http://www.wdwinfo.com/wdwinfo/dining/diningdetail.cfm?Restaurant.ID=137