Photographing a wedding?

I have been a "professional" portrait photographer for about 6 years now and I am trying to break into the Wedding Photography business. I was wondering what are some important information that wedding photographers gather from the Bride or Couple at the initial consultation. I know it is mostly the Bride or Couple that will be asking me most of the questions but am curious besides when, where and all the specifics what other information will help me be prepared if I do get the job.