when we went Nov 05 the eve buffet included,
chicken wings, chicken nuggets, ribs, fresh undressed salad items, potato salads and coleslaws, fresh fruit, spaghetti, meat balls, potato mash, croquettes, ice cream, cakes, muffins, pasta, rice, fish coujjons, soup.
We ate several times over 2 weeks and most of these thing were there nightly plus more. In fact our DDs who were 2 and 4 at the time ate solely from the buffet as under 5's ate free from the buffet with a full paying adult. We loved the availability of fruit and veg as that is what the youngest prefers to eat over fries any day.
Hope this helps
Can't help with morning buffet as we were onsite at WDW