I don't think you'll regret your ADR. We've had two great dinners at Akershus. DD (3) LOVED this character meal. I liked that the entrees and dessert were served to the table, so we weren't up and down to the buffet for the entire meal. We saw 5 princesses on each visit... and the photo package with Belle is a nice bonus. I thought the food was better than that at other character meals. We especially liked the fish (I think mahi-mahi) over arugula and pureed potatoes, and the wild mushroom ravioli with chard. DD (10) loved the smoked trout and smoked salmon on the cold buffet, and DS (13) liked the crusty rolls. They don't advertise this, but the meal is technically all you can eat, so if you order an entree you aren't thrilled with, ask for them to bring another option. Ditto on the desserts.
In my opinion, this is a great value on the dining plan (only 1 credit, and the child's cash price is more than double the cost of the dining plan for the day). Much better deal than the Cinderella meal at the castle...and better food. I don't think I would pay cash for this meal though.. I'd rather eat at a signature dining restaurant for about the same amount.