My DD6 enjoyed them both. I have to agree that CRT has the best atmosphere. Nothing beats being royally received by Cinderella, then climbing the stairs into the dining room in the castle. She loved Akershus as well simply because her favorite princess, Aurora, was there but not at CRT.
Food-wise, neither one is worth the price just for the food, but the Akershus lunch was more to my liking than the ordinary CRT breakfast.
FYI, we had the following princesses at each:
CRT: Cindy (of course), Snow White, Jasmine, Belle (peasant dress), Fairy Godmother
Akershus: Belle (ball gown), Aurora, Ariel, Jasmine, Snow White
Incidentally, Jasmine remembered my red-haired DD6 from CRT 3 days earlier.