Simplest way ever to sneak liquor in for me that worked every time.
I haven't had to to utilize this in a long time as they only really check the student section at our stadium. But on any cold game that required a jacket, I just put a pint or two in my hood (while hood is down towards your back). As you walk in, they pat you down in the normal spots but never even consider looking in the hood. I bet that worked 15 out of 15 times for me at least.