I'd suggest Akershus. Go for the princess breakfast, where you get a free picture with Belle included. The princess interaction is very nice and at breakfast, the only Norwegian thing you'll find is herring in the cold food buffet.
We've eaten there twice and think the breakfast is very good. There's a cold food area with cheese, rolls, the aforementioned herring, yogurt, fruit, breakfast pastries, etc. Then you also get bacon, eggs, sausage, this yummy potato casserole, no pancakes as I recall, biscuits, cinammon rolls.