To protect Mackenzie Foy on the set, Bill Condon had set up a swear jar where any cast and crew members caught swearing or uttering profanities were fined on the spot. The amount collected from the jar was donated to St. Jude's Children Hospital.
Was filmed back to back with The Twilight Saga: Breaking Dawn - Part 1 (2011). Filming began on November 1, 2010 and wrapped on April 15, 2011. Filming took place on location in Baton Rouge, Louisiana and Rio de Janeiro, Brazil as well as in Vancouver, Canada.
The card The Volturi send to Bella Swan/ Cullen (Kristen Stewart) after she marries Edward Cullen (Robert Pattinson) and is turned into a vampire says, "I so look forward to seeing the new Mrs. Cullen Congratulations".
Jackson Rathbone, who plays Jasper, and Rami Malek, who plays Benjamin, first worked together on the TV series 'The War at Home'. Rami plays Kenny, a series regular, and Jackson plays Dylan, Kenny's boyfriend.
The scene screened for fans at Target stores during the release parties for The Twilight Saga: Breaking Dawn - Part 1 (2011) was a 2 minute clip featuring Bella and Edward in their cottage after Alice and Jasper go into hiding.
On February 10, 2012 it was announced that the first trailer would be screened on March 23, 2012 before The Hunger Games (2012). Lionsgate will include the trailer on every print of The Hunger Games released to theaters.
On January 16, 2012, Target stores announced they were to screen an unnamed scene as the first sneak peek of Part 2 at the DVD release parties for The Twilight Saga: Breaking Dawn - Part 1 (2011) on February 11, 2012.
Alice Cullen's (Ashley Greene) note for everyone on the back of a page she tore from The Merchant of Venice by William Shakespeare: "Gather as many witnesses as you can before the snow sticks to the ground. That's when they'll come." The subsequent note she left for Bella Swan (Kristen Stewart) alone in the book the page was torn from: "J. Jenks, Seattle - destroy this.", after which, she immediately burnt the book in the fireplace next to the bookshelf.