We loved ULU cafe, it was my younger daughter's favorite place and we had lunch there nearly every day. We ate breakfast in our villa, but the breakfasts looked great and were very popular. It must open around 7am, because when we came down around 7:30 to the pools, it was open.
They have a big cooler type place with salads, wraps/sandwiches (including kid size turkey wraps and Mickey shaped PB), fresh fruit (aweseome papaya and pineapple), yogurt, etc. Then there is a cafeteria bit with hot food. They always had flat breads, which were great (kalua pork, cheese and tomato, and lomilomi). And then they would have rice, mashed potatos, meat loaf, chicken, vegies, stuff like that. It is a very good deal for lunch -- the chicken lunch was 1/2 a chicken with sides and it fed my whole family! They also have chips, and a place with muffins, bagels, cookies, etc.
There were no chicken tenders at Ulu but there are chicken tenders (and fries) at the little food shack next to the shave ice place, and I am pretty sure you can order them from the pool side menu. I didn't see Mickey pretzels anywhere, but we didn't eat everywhere.
There's plenty of food to satisfy picky kids. And I loved the ready availabillity of fruit and vegies. If you have a villa, it will be easy to feed picky kids, and the buffet at Makahiki also has a ton of stuff -- we loved it, but it's pricey. There is Mac and Cheese there, and you can order A La Carte. We ate there once, for dinner.
Enjoy!