I could be totally wrong, but when we were there a year ago and my mother was with us, same package but different room, my card said 3adults/1 child and her card said 1 adult. When I paid at a meal, I could not charge 4 adults and 1 child to my card.
Yes, you can use your entitlements anyway you want, but when paying at a TS the server would only charge to the card what was listed, not more.
Here is the info on the WDW web site:
http://disneyworld.disney.go.com/me...altDisneyWorld/en_us/PDF/2010DeluxeDining.pdf
and here are some excerpts from it:
You may not redeem meals or snacks for any Guests who are not on
your Disney Deluxe Dining Plan.
The Disney Deluxe Dining
Plan is unavailable for Guests under the age of 3, but they may share from an adult plate at no charge, or a meal may be purchased from the menu. The price of the meal will be added to your bill. Guests ages 3-9 must order from a childrens menu where available.
Q.Can I use my Disney Deluxe Dining Plan to redeem meals for friends or family
members who are not included in my reservation or have not purchased a
Disney dining plan?
A. Sorry, you may not use your Disney Deluxe Dining Plan to redeem meals for
friends or family members who are not included in your reservation or have not
purchased a Disney dining plan.
Q.Must I use exactly 3 Meals and 2 Snacks each night of my package stay?
A. No, for maximum flexibility, meal entitlements can be used whenever you like during your package stay. For example, one night you may wish to hold off using a meal and then the following night use 2 meals to dine at a Signature Restaurant or Dinner Show (subject to availability).
Of course it wouldn't hurt to try. I would just ask first. You can always ask for an extra plate and split the kids meals. At buffets though there shouldn't be a problem at all.