YMMV / Secret Passages

• Aluminum Christmas Trees: After Elsa's impromptu departure from the ball due to her powers being revealed, the woman with the baby asks her, "Your Majesty, are you all right?" and Elsa replies, "No," in an almost inaudible voice. While this "no" might seem to be new dialogue, in the movie, Elsa does reply "No" and shake her head when this happens.
• Hilarious in Hindsight: Anna and Elsa spend time secretly communicating by sliding letters under Elsa's door. This story was written two years before Olaf's Frozen Adventure showed that Anna slid a drawing of Olaf under Elsa's door at every Christmas.