I started attending conventions as a fangirl long before I was a professional writer. I knew what to expect and when I got my first Guest of Honor invitation I was over the moon. I still get a little thrill at the very idea that someone wants me to attend a convention... as a guest!
But it's not the same thing. Whether heading out on a book tour or invited as a guest to a small local sci-fi convention, attending programming at a larger conference, or visiting one of those monster book festivals or comicons there are some things I think a professional writer should always keep in mind.
So here, for your amusement (and perhaps education) are my highly subjective... Tips for the Traveling Writer