Pocahontas was in a weird place, but she actually meets at Animal Kingdom in WDW.
I personally think The Flying Gauchito and Burrito were the rarest, as I have seen Angelica at MK for the Halloween parade 5 or so years ago. The stitch experiments are definitely among thee rarest, along with those like Jessia Rabbit(who looks horrible), Li Shang and the Atlantis Characters.
Flora Fauna and Merryweather are confusing, in most parades including Paris' daytime parade, they are face characters but usually for meets, this and also Spectromagic they had masks. So sometimes they are face others time they are masked.