Robert Pattinson took a boat driving lesson so he would be able to drive the boat in the honeymoon scenes. Despite taking lessons, he crashed the boat in both the lessons and while filming in Brazil.

(at around 55 mins) When Bella is sitting in the car and is calling Rosalie, the phone is still in lock-mode.

Shortly after the credits roll there is an additional scene.

In the UK, the film was originally shown to the resident censors, the BBFC, in an unfinished version. The BBFC advised the company that the film was likely to receive a '15' classification but that the requested '12A' certificate could be achieved by making changes to the sex scene between Edward and Bella. In particular, the BBFC suggested that more graphic sight of Edward thrusting while he lies on top of Bella, while her legs are wrapped around his torso, be removed. When the finished version of the film was submitted these changes had been made, with the scene having been reduced in length and with less focus on full body shots. As a result, the film was classified '12A'.

Edited into The Twilight Saga: Breaking Dawn - Part 1 - Extended Scenes (2012)