Let's see... with 33 miles, one stop at a feed station should be enough. Keep your stop short and sweet: refill your bottles, eat something small, some light stretching and go. Have a spare tube and levers, in case you get a flat tire. As you ride, ride close to the left edge (UK, right?) of the road and always look back before passing someone or otherwise moving to the right. You will have a ton of fun.