I will be there judging, this will be my 3rd year. I'm judging or table captain both the invite and the open.
Jeff is right though, focus on judging not what your taking home. I doubt you meant it to sound like that but it does. Especially to the guys that are cooking.
Go and have fun judging and go out and meet the teams after judging. Most are very friendly and will answer questions you might have. You will have a blast and theres always plenty of food and party festivities going on. Just a great time.
To answer your question. The last couple of years they did allow you to bring your cooler. I have never brought one and don't plan on it.
Ralph Weller, BWS Fatboy, WSM Bullet, KCBS Master CBJ, Certified Table Captain