Not sure how long it's been since you've visited Charlotte but I'll have to disagree with you. I went twice last year - we tailgated very well and had plenty of space. Things have changed and if people want to congregate the people figure it out and the area tends to accommodate. As you said parking is $20-$30 as you get closer to the stadium. We were in the Charlotte Observer parking lot and it was excellent. 4 Tents together, grilled, corn hole, etc.