Nightlight7,
Not sure what you read, but tickets are not sold out, although some units do fill up. Anytime between now and April will be a good time to register. The event takes place in June of each year, with approximately 3000-40000 players attending. There are many vendors on site, including Tippmann, RAP4, JT, Weekend Warriors, etc. Lots to do every day. Check out the 899th Tank Destroyers Battalion, nicknamed the BLACKCATS!
Here is a link for your convenience. Due to changes taking place on the field and game format, our role will significantly change this year. PM me if you have more questions.