Hi, Dena! I am so happy to hear that your daughter is excited about
Holidays Around the World at Epcot. This is such a great tradition to share with your family. Be sure to visit Helga in the German Pavilion, who usually has a special visitor join her at the conclusion of her story. The Voices of Liberty Dickens Carolers are always a Guest favorite as they share traditional holiday songs in the American Adventure Pavilion.
I took my daughters to Epcot this past Christmas to take part in the many holiday experiences at Walt Disney World Resort. We only had one day to visit Epcot and managed to visit the majority of the Holiday Storytellers. I think you should be able to see all of them plus view the Candlelight Processional in two days. There is a great website that I follow, KennyThePirate.com, where you can find character schedules and touring plans. The past few years, he has put together great plans to help Guests see all of the Holiday Storytellers while also taking in other Epcot attractions. Just visit Kenny's website and search for "Epcot Storyteller Touring Strategy" to find his plans.
You should have plenty of time to visit your favorite Epcot attractions in the morning before World Showcase opens at 11:00 a.m. You can include Test Track as your initial Tier One FastPass+ selection each day you visit Epcot. Also, after you have used your initial three selections, you can head to a kiosk and choose another from any remaining FastPass+ attractions, including Test Track, if available.
I hope you have a merry holiday at Epcot, Dena!
Brandy