The name of Natalie's podcast goes back and forth throughout the movie. Sometimes it's called "Holiday Love" and other times it's called "Dear Christmas", like the title of the movie. There is a poster in the background of one scene that shows her podcast as "Holiday Love".
Natalie drives from Chicago to Lake Tahoe. When she phones to say she's half an hour away, she also says she's been driving for 12 hours. It takes more than twice that time to make that drive, and she isn't shown stopping over anywhere.