My friends and I just had lunch there a little over a week ago. We all enjoyed the buffet part of the lunch where they have all of the cold salads, cheese and meats.
I had the Fylt Pasta, which I found very tasty. My only complaint was that the food wasn't hot, just barely warm. But outside of that, I enjoyed my lunch.
The interaction with the various princesses was enjoyable as well. Except for Belle, who we met when we first entered Akershus Royal Banquet Hall, the princesses came by each table and spent time with us and took pictures and signed autographs.