Do not pass go, do not collect 200 bucks- just go write. Getting the interview down while it's fresh in your mind is going to do wonders for your piece. In addition, you'll note any technical issues with your recording immediately, and will still be able to rely on the old fashioned technology in your head- your memory.
You don't need to write your entire story in this setting, and I bet you won't be up to it, especially if this is your first or second interview. However, do get a rough outline down and accurately record your favorite quotes and some general observations.
