I'll just repeat what everyone else has said.
Chimes/Serrano's/The Varsity first. Walk through campus and visit. People will feed you and give you drinks no doubt. You can even work your way to Walk On's for the game (which is on the opposite side of campus from where you started), or head back to the Chimes/Varsity/Serrano's location.
Like also stated, it's not usually LSU's best tailgating turn out. But then again, even those days are better than some major university's best turn outs.