Here is a pretty good link detailing the main tailgating communities among Seahawk fans.
http://seattle.cbslocal.com/2012/11/...ilgating-lots/
Start with Hawk Alley right next to the stadium with Hawk One, and if you want more action head south to Seahawks Tailgate command center. Be friendly and you'll be welcomed like a long lost Canadian relative.
There is plenty of grub for sale all around the stadium so that is not a concern. You cannot have an open container of booze, so you need to keep that on the down low.
Even at the tailgating events put your booze in a blue plastic cup, like you're at a kegger and you should be fine. Don't carry around your booze like a stupid ass as you'll put everyone at risk and look like a real noob.
The stadium has metal detectors, so if you can do a plastic flask that should work for the day.
Keep your booze low and your spirits high and you'll have a great time.
Here is a pretty good link detailing the main tailgating communities among Seahawk fans.