Bring lots of beer.
Bring lots of steak (KC strips, or ribeyes!), brats, and perhaps some hotdogs.
Have plenty of Red showing, and get a Chiefs Gazebo like YZILLA.
Or you could just go and hang out with YZILLA and he can show you how!
Get ahold of him he has tickets and will be the ultimate tailgater at the game!
You should also show up at 8:30 when the gates open to get prime tailgating realty!