I definitely agree with wear deoderant, no watches, no perfume. These were three hard and fast rules every year.
Also, I'd say think of some random question in case you run out of things to say. not just movies, etc., but something along the lines of ,"if you were going to be on survivor what would you take with you?" I've always had at least one girl that no matter how hard I tried I got stuck. These random questions can jumpstart a dead conversation - they have also gotten a few shy girls out of their shell
I also second or third or whatever the breathmints
oh yes, and if you bump, never, never approach a sister from behind (common sense, I know, but I know I've forgotten from time to time)