I'm not going, but as someone who's been to a few conventions, here's some friendly, hand me down pointers:
1.locate food and restrooms as soon as possible. Chances are you will need them or others will need directions to these facilities.
2.be polite. This is a no brainer, but people need reminding, especially during exciting events filled with like minded people.
3. When someone asks you for help locating something, try to help them out. You are now part of a herd. And the herd helps each other, no matter what.
4.BE HYGENIC! If you need to shower, get a shower and please, for the love of Faust, use deodorant. At conventions, people may smell..iffy. Make sure you do your part to not be one of them. Remember also to be presentable. This means brushed teeth and combed hair. You are representing the community to the media, and any passersby. Do a good job of it!
5. Have fun and stay safe at the con!
6. KNOW AND FOLLOW con rules! And if any suspicious/rule breaking activity is spotted, please do your part as a human being and report it. Your fellow conventioneers will appreciate you keeping the con safe.