Hi Diane! Welcome to the Disney Parks Moms Panel!
Ana and Elsa can be found on the first float of
Disney's Festival of Fantasy Parade, which is the current version of the Magic Kingdom Park 3 O'clock parade. This parade starts in Frontierland and heads east through Liberty Square, then crosses a bridge to get to Cinderella Castle. If you imagine a round clock, this parade goes from 10 to 6 clockwise around the front area of the castle, where it then heads down Main Street U.S.A. It will then do a circle around the front area of Magic Kingdom Park in a 12-to-10 clockwise rotation, where it then ends. My family just returned from our own Walt Disney World Resort vacation three days ago, and we twice caught this parade from the curb in front of the shops along Main Street U.S.A. Though this parade starts at 3 O'Clock, by the time it makes its way to Main Street U.S.A, you'll be waiving to all of your friends around 3:20 P.M. Because this is highlight of your trip, I'd recommend your family start looking for a spot along the above route by 2 P.M. Of course one parent can stay with the seats while the other takes the kids to do something fun during your wait.
Ana and Elsa can also be found in Magic Kingdom Park during
Mickey's Royal Friendship Faire show, which has multiple showings per day. I'd still encourage your family to at visit Epcot one morning, especially if you have the Park Hopper ticket option, as
Ana and Elsa have their very own meet and greet in the Norway Pavilion of World Showcase.
I hope this helped plan your Disney Days Diane, and We'll See You Real Soon!
~Kristen