I'll brave this one! Just my $.02!
CRT - It is THE princess breakfast. It's in the castle and location does make a huge difference . Also, it's the popularity and word-of-mouth. I remember my first trip with my dd and just kept thinking "what if I can't get it?" I was so nervous just because I heard it was so good and so hard to get I guess. Food - we had a good day with the food. It was wonderful! Some have not had it so good lately but the Dining Plan has really put a lot more people actually doing TS meals, so I think the quality might be suffering at some places.
Norway - It was good. I still remember CRT as more exciting, more charming, more teary-eyed, but that's because it was our first trip. Food was good. Typical breakfast, but it was hot, plenty of it.
Princesses - Main difference here is Cinderella. If your dd's are crazy about Cinderella, you have 2 choices - CRT or 1900 Park Fare for dinner. She is usually not at Norway. Interaction, good and bad reports at both places. The others are basically the same (Snow, Belle, Aurora, Mary) and with Mulan and Jasmine additions at Norway, sometimes others.
CRT's prices just went up too, but what everyone is willing to pay varies, so that's up to you.
They will love whichever you choose and there's always next time to try another one!