A comment about the dresses: I was next to Elsa (with my adult daughter near Anna) and could really examine Elsa's costume...it was so intricate and detailed...as a seamstress, I was fascinated...so I commented to Elsa about how beautiful her dress was...she thanked me and explained she had made it from ice and snow...perfect...I was speechless...
I would guess that they will remain in their "expected" costumes as SO many kids dress like them...even Belle appears in her yellow dress most of the time on the Merrytime cruise (ah, but the red dress was fantastic)