Bella and Edward's relationship sends a somewhat mixed message to teens -- it's chaste and loving, but it could also be perceived as obsessive. The Cullens are a very loyal family, and they strive to rise above their baser vampire instincts.
A lot of the violence is implied: There are fast shots of vampires right before they kill their prey (both human and animal). A group of guys follows Bella down a dark alley and starts harassing her; Edward threatens them. A predatory vampire tries to kill Bella. There's a bloody, vicious fight between an evil vampire and the Cullens. Bella is seriously hurt and ends up in the hospital. Charlie, a sheriff, has weapons, including a shotgun.
As in the book, Bella and Edward have an intensely romantic (though overall fairly chaste) relationship. They stare and gaze at each other lovingly and share some passionate embraces and a couple of kisses, including one make-out session that takes place on a bed while Bella's in her underwear. Other couples flirt, hold hands, and swoon at each other.
Incredibly mild for a PG-13 film, just like the book: "repulsive," "vile," "dammit."
Brands featured include Volvo, Hummer, Mercedes, Mac, BMW, Lays potato chips, Body Glove, and Southwest. Most appearances are subtle, though Edward's Volvo has some big moments.
Drinking, Drugs & Smoking
No drinking or smoking by underage characters. Bella's dad and his friend stock up with cans of beer for an afternoon together but aren't actually shown drinking them. Bella gives her dad an unopened can of beer in one scene.