Babysitter

I called and lined up the kids' first real babysitter today. We have been invited to a party Saturday night December 9th and it's an adult only party. It's one I would really like to attend and so I found us a babysitter. She lives down the street from us and Matt is aquainted with her dad through work. I'm nervous about it but think everything will be fine and we will only be 10 minutes away if anything should happen. It's just the first time the kids' will be left alone with someone other than family. I was bound to do it sometime and now is the time. Anyone have any advice for me?