Back when my girls were into the Princess phase (where does the time go) we did them all and the only one they still ask about is 1900. I think it has the best food out of the 3. Realize CRT is not about the food as it's average to be kind. Your paying for dining in the castle, seeing Cinderella etc. Norway is the best bang for the buck if you want to get all the princesses without having to hunt them down.
CRT is usually Cin, FGM, SB, SW, Belli, misc (we had mary poppins once).
1900 is usually Cin, FGM, WSM, PC, ESS, mice
Norway is usually Belle, SB, SW, Ariel, Belle, Jasmine, misc (mulan etc)
The CRT photo is a very nice keepsake and you get good amount of time with the characters as the others it goes by really quick.