You should have no problem meeting princesses at MK but I don't remember ever seeing them at AK unless you count Pocahontas.
At MK, there are multiple places to meet princesses.
There is a meet & greet for 3 princesses in the Town Square Theater. Usually it is Cinderella, Belle & Rapunzel until around 4-4:30. After that another princess is substituted for Rapunzel. Snow White is sometimes here too.
Sleeping Beauty meets next to City Hall. Merida meets in the Fairy Tale Garden near the Castle.
Tiana meets in Liberty Square.
Ariel meets in the Adventureland Verandah. Jasmine is also in Adventureland near the Magic Carpet.
Cindy aka AgentC
Intercot Staff: Accommodations, Dining, Movies, TV, Music & Musicals
2013-April- AOA-Nemo, June - Vero, Sept - Grand Floridian
2014- WDW Marathon Weekend ?
Past Trips: AOA-Mermaid, AKL, Bay Lake Tower, Beach Club, BCV, BWI, CBR,CSR, Contemporary, OKW, POFQ, POR, Yacht Club