Hello Krista!
Welcome to the Disney Parks Moms Panel with a very good question. It seems like your daughter is just like my 6-year-old: they both like Disney Princesses and are very specific about what they like to eat.
Akershus Royal Banquet Hall is one of our favorite character dining experiences. Their Norwegian specialties for lunch and dinner are delicious, and to my surprise many offerings appeal to my little girl. I understand that you are bringing your food, but you can always talk to Cast Members to see if it's possible to accommodate different requests.
You are not able to share meals at buffet and character dining locations, as well as dinner shows, so you will be charged for every Guest in your party. However, at table-service locations you are not required to place an order for everyone, which means you can even share your meal with your daughter if you wish to do so.
Krista, I hope you have an unforgettable visit. Please stop by the Disney Parks Moms Panel with more questions.
Best magical wishes,
Thiana