Enchanted is interactive with some/most young children being asked to participate.
My daughter was twice selected to play a horse.
She prefers the Beauty & Beast Show in Hollywood Studios.
But if my daughter were a bigger fan of Belle (and playing a horse), I could see wanting to get the photo-op of Belle and my child.
For instance, since we have seen Belle on multiple occasions, but not yet visited with Rapunzel, my child was willing to 'trade' a Princess Lunch for a Rapunzel FP+ for our upcoming trip.
So, not to point out the obvious, but you might consider a Princess Meal since Belle will likely be one of the princesses.