Hi there, Kate!
Christmas at Disney! It's absolutely the most magical experience I've had during the holiday season!
Since your sweet little Princess does not require park admission, she can't be included in the
FastPass+ selections. However, any attraction or show that your little one meets the height requirements will grant her entrance into the FastPass+ line. So, as you make your FastPass+ plans, just know that your little one is welcome to join you in the FastPass+ line, just as long as she's big enough.
Have fun making those choices! Making our family's FastPass+ selections is one of my favorite Disney things to do before our vacation!
If you have more questions, please feel free to visit wth us again!
Happy planning!
Korliss