Advice? Well, if it's anything like the
UK GD it'll be huge. Give yourself plenty of time to wander around and take it in.
Also, don't know if this happens across the pond or not, but if you enter the Golden Demon, you will most likely get in early as they let the entrants in first.
It may also be beneficial to have some questions prepared if there will be a Q&A session with Editors/Designers etc.
Other than that, enjoy yourselves and pay heed to the earlier advice about Eau D' Geek.... It WILL be strong!