We went in February with an almost 3 year old and almost 5 year old (both girls, birthdays in March/April). We did lunch at BOG. The younger one didn't really care, but the older one liked the restaurant and particularly the rose in the West Wing. We had a large-ish group (10 people), so finding seating was a little crazy.
We did breakfast at CRT, as well as both sides of Fairytale Hall. There are more princesses at CRT, but the pictures with all but Cinderella are in the dining room, so there are other people, tables, etc. in the background. The Fairytale Hall pictures have a better background, and we had better/longer interaction at Fairytale Hall than in CRT (with the exception of Aurora. We met the same Aurora at Akershus a few days later and she was excellent both times.)