Quote: So what about aperture? A largish one for inside and smallish one for outside?
Sorry, but if you need to ask questions like that, perhaps you'd be best using the camera in full auto mode. Learn manual or semi-auto operation on something more repeatable than a wedding, when it's all second nature you won't need to ask the question and stand a good chance of coming away from the event with usable images.
Hear, hear, and stop shooting weddings until you've figured this out.