We stayed at HIFS the last week of November with our 3 children. The deal is:
In the ClubCar Restaurant, one adult must order the buffet ($13.95 on weekdays - $17.95 on weekends because it is a seafood buffet) in order for the children to eat free off the buffet only. That is until the restuarant closes at 10 p.m. The other adult does not have to order the buffet as long as there is not more than 3 children eating (3 kids free per adult).
At Pizza Hut and A&W the children eat free before 5 p.m. and receive a kids meal with a purchase of an adult burger, fries, (and I think) drink. This was a rip off if you ask me because unless it is your day off, who's already back at the resort before 5 p.m.?
As stated on their website, everyone eats free hot breakfast buffet and this was a tremendous money saver! You don't even need to eat in the dining room. On a few mornings I sent DH down and he came back with several trays of food stacked up and we ate in our room.