I would like to humbly suggest that if we have an AA tailgate, that we host it where I go every Saturday. We set up shop 2 blocks behind Alumni Hall in a grass lot. It is $40 a car to park there, but there are numerous cheaper options nearby on front lawns if you would prefer to park for cheap and just walk over. We have a shaded spot with a picnic table, along with a porta-jon and satellite tv feed from the house at the end of the lot. It's not the Ritz of tailgating, but it is a damn good time and plenty of good people (who are well behaved!) It's also super close to Midtown if you wanted to hang out for a hour or so and then hit the usual bars and restaurants.
I personally bring a fully stocked 150qt cooler with alcoholic and non alcoholic beverages, with generally 3-4 appetizer dishes and some kind of BBQ that can feed 10-12 people. If everyone attending brought something small like a dish or a 6 pack, I think we would have more than enough to go around.
What do you think? If there is a better place to go or better suggestions, I'd love to hear them.