In case you forgot, Comic-Con is just over two weeks away. I've seen a few people attending for the first time and asking questions, so I thought it might be helpful to open up a post where anyone can ask questions and anyone can answer. I am far from an expert; I've only attended four years - but I know folks who have been going since the beginning. If you know the answer to someone's question, jump in and answer.
Some of the tips from this post about surviving conventions might be helpful too.