The only thing I would add is to consider volunteering a couple of hours (or more) when the people running the convention start looking for people. The jobs aren't difficult and will give you a chance to meet more of your fellow collectors and form friendships that will be worth more than the chips you take home.

Just watch The Chip Board and you'll start to see calls for volunteers within the next few months. Don't be shy. I guarantee your help will be warmly welcomed and you'll be eager to sign up again the following year.