Generally speaking, rural drivers are a much better behaved species than city drivers. I'm not sure whether they're intrinsically this way, or there are just fewer opportunities for them to do behave badly. You can't go around running red lights if there aren't any red lights to run.
I wouldn't treat a romantic scene any differently than any other scene. I would really say the biggest preparation was chewing gum and breath mints! For a kissing scene, it's all about the breath mints!