Children under 3 are not issued dining credits at any time, whether it's free or paid dining. They are expected to eat off the parents' plates in most CS and a la carte places. If you buy anything there specifically for the child you will need to pay for it.
Buffets: Children under three may partake of the full buffet at no charge.
All you can eat family style restaurants: Children under three can eat any of the food delivered to the table in the family style service and will not be charged.
Fixed price restaurants (like CRT or Akershus): Children under three will be provided with food at no charge.