We always do...so you'll have a few choices of how to meet one:
1 Reserve a meal at Ariels Grotto
Where you are guaranteed to meet ariel, and at least 3 other princesses.
pros: guaranteed, no wait, cute dancing lesson for the little princesses
cons: price, my husband hates the menu, you are a little rushed through the meeting ariel part
2 Princess Fantasy Faire now located next to the castle on the left hand side. They now post which princesses are inside, so you don't have to hope for your child's favorite to be inside. Long lines are usually the problem here. I usually just use it as snack/rest time and I wait in line while my husband takes turns taking the girls on rides.
3 In front of Sleeping Beauty's Castle
Sometimes random, sometimes scheduled, one or more princess will stand out in front of the castle, on the little paths on either side. Usually next to Snow White's wishing well. If you spot the princess your kids want to see, then hop in line and you'll be glad you did!
4 This pic of Merida was snapped just outside of It's A Small World
