You'll find most of the Princesses at Royal Reception for meet and greets.
They also do shows at the Royal Theatre.
We saw a lot of Princesses at night after the fireworks walking around Fantasyland after Royal Reception had closed, Aurora was also up on the balcony talking to the kids.
I highly recommend Bibbidi bobbidi Boutique, we always do it for our girls (4 and 7) and they love the attention they get all day long, it is one thing at DL that is worth the hefty pricetag.
Glad they aren't doing the princess character meal, we spent $900 there a few months ago and I would not recommend it.
Anna and Elsa are in DCA although sadly most of the time you can only meet one of them and sometimes it's just Olaf, you don't know who is inside until you enter - we got Anna 3 times which was upsetting to the kids. I wish they would go back to having them both there all the time.