Does any one have any info on this. i would like to go and take my twevle year old nephew. is he to young for this. should i wait until he is older. i have never been my self so that is way i ask

We've got several threads on this in the DM Meets board.

 

As for whether or not its appropriate for a minor, it's hard to say. During the day, I'd say absolutely. However, after about 7PM, the more risque costumes come out and there's a lot of drinking. The later it gets, the wilder the party. But there are still "safe sections you could take your nephew. I had my youngest sister with me back in 2003 when she was 13 and she had a blast.