According to Chief Rice, no guns will be allowed in the stadium (including off-duty LEO). Still trying to find out if people will be turned away or told to take it to their car or if they'll be arrested.
I suspect that this will end up in court after someone with an enhanced permit files a complaint with the AG. It will be interesting to see if the "sensitive areas" opinion is upheld when it comes to something like a public event held on campus property. I'm sure that the person who challenges this will be vilified as some sort of gun nut extremist by the "2A-But" crowd.
Either way, the legislature is likely to bend to the will of the SEC before it is all said and done because of the potential loss of revenue. If the legislature doesn't bend, then I look for the schools and SEC to get creative with some sort of private entity leasing arrangement.
Edit: IC holders will be told to put the gun in their car, then they can come in.