You definitely will not have a problem feeding your almost-3-year-old while on the DDP. It will be smooth sailing.

My DS was 2 years, 8 months during our trip in late January. At all our buffets, he got his own plate of food and beverage. At both Akershus and CRT, they brought him a children's plate of food and a beverage as well. At CRT, he even got a plastic sword... He still plays with it and tells everyone that "this is sword the princesses gave me". WDW was REALLY a magical place for my almost-3-year-old!