Yes, Thurs-Sun does change things as kids will be getting out of school for Christmas break. That means Sunday could easily be crowded - but Thursday is still likely low crowds. Do Minions on one of the days earlier in the trip, before the crowds start. I read that even the express pass often has a real wait for that. (However, it was a walk-on first thing in the morning when I was there last week). Make sure to do the Harry Potter areas on the earlier side of your trip too - and of course, the early hour is an excellent time to do that. Even when crowds aren't high, the stores and walkways can get rather crowded.
For food, consider City Walk as well. It's really easy to walk out of the park for more options. For City Walk, we liked Red Oven Pizza - and you can get the pizza to go and take it back to your room which is very helpful if you have any kids in your group who have reached their park limit. I've read good things about Cowfish too, but there wasn't a lot on the menu that I'd eat so we didn't try them. We always eat at Three Broomsticks at least once. This past trip, we tried the Doc Segrue Kebab place for the first time and I was pleasantly surprised. The ice cream place Florean's ice cream place is worth stopping by too. The butterbeer ice cream was amazing. I liked my lavender and Earl grey ice cream too. They had a lot of interesting flavors.
I didn't get anything from Krusty Burger but there are other options next to it in the same building. My husband got the chicken and waffles from the place right next to it. (Cletus's Chicken Shack?) Two of my kids got pizza from one of the places in there - not sure which one. It was so-so. And then I split a turkey wrap with my other child which was a few spots down from Krusty.