We know that Emma experiences two different Christmases thanks to some Christmas magic. What's confusing though is that she wakes up on December 24th having missed her alarm. In one scenario she makes her flight home and in the other misses it. She then wakes up again on December 24th and you think you'll see what plays out for real. Except nope. One Christmas Eve she experienced was real and the other was a a dream. Which would have been fine except as clearly indicated by the date on her phone, it's Christmas Eve both times she wakes up. The movie goofed big time and made what could have been a cute movie confusing. At least it was casted well.