That's tough (impossible) to say. The WDW that Walt invisioned opened up without ONE SINGLE decent restaurant, so it is hard to impute a significant focus on the culinary arts to the founding father. (At the time of his death, DL didn't really have any restaurants of merit either). It appears that Walt was satisfied with typical park food and "buffeterias". But we all know that Walt changed with the times, so I think it is fair to assume that as WDW evolved, he would have evolved with it. But I don't think that food services was his forte. I am sure that he would have ceded that planning and vision to someone else.