The final installment in the Twilight series is about fulfilling your personal destiny, as Bella realizes that she was "born" to become a vampire. The importance of family and friendship is pivotal, as Bella decides to keep her father in her life, and the Cullens summon their vampire friends from around the globe to stand with them against the wrath of the Volturi.
(Note: Potential spoilers ahead.). For most of the movie, the threat of violence looms, so the vampires practice their combat/defense abilities before facing the Volturi. In a flashback, a bloody-faced "immortal child" and his maker, a vampire "mother," are killed and burned. During the climactic battle scene, various characters (major and minor) are injured, beheaded, burned, and otherwise hurt -- and even killed (some of the deaths are likely to be shocking). One vampire can telepathically torture people, another immobilizes their senses, and other vampires show off their abilities in battle.
Now that they're married, Edward and Bella have sex in a rather prolonged, sensuous sequence that tends to focus on close-ups of their faces and flashes of skin -- but no graphic nudity. In the final shot of the love scene, there's a glimpse of them standing in profile, and viewers can see their bare backs and the side of Bella's breast. Various passionate kisses both between Edward and Bella and other couples in the movie.
Language includes "ass," "damn," "hell," "bloodsucker," "crap," "idiot," "stupid," etc.
Bella drives a Volvo, but otherwise there are fewer obvious product placements than in some of the other Twilight movies. Off-camera, there's loads of Twilight-branded merchandise, including apparel, posters, games, calendars, jewelry, toys, and accessories.