I second the bike tail-light... Tho we've had the same problem with the super flash with it falling off. DH lost his only a mile from home, but even retracing the route on foot didn't turn up the dislodged light. Only other advice I can offer is to just relax and enjoy the ride. My first ride I freaked out and nearly hyperventilated when traffic and bike lane became one, on a hill, so I red-lined and blew up unable to recover due to stress (and a lack in fitness), but I know you'll be A-Ok

Let us know how it goes!!!
Shannon