Welcome to thge Dis!!!
Children 2 and under will eat free at any buffet/family style/all you can eat meal. However if you order them a meal off a regular menu at any other restaurant, you will pay the regular price.
The meal plan doesnt seem to be worth it for my family. My kids eat very little and when we eat out we dont usually get all the courses. But many people seem to be very happy with the plan and it works for them. If you feel you could get your moneys worth,then it might be worth looking into.