Cinderella is fairly regular at the Disney Parks.
At Walt Disney World she can sometimes be found in France at EPCOT (though not often), and the Akershus Restaurant. In the Magic Kingdom she is normally at the Town Square Theater. She can also be found at Cinderella's Royal Table.
In Disneyland California Cinderella can sometimes be found at the Princess Fantasty Faire in Fantasyland, and Ariel's Grotto at DCA.
In Disneyland Paris she is often at the Castle Stage and in Auberge de Cendrillon in Fantasyland.