Can you carry a stadium seat with a back into the stadium on game day?

I think you can take one with size limitations. Some season ticket holders have semi-permanent seat cushion with backs. If you buy tics from an individual ask if they have them.

No you may not

You can only take one clear bag 12x6x12 that is also the policy for Thompson-Boling Arena

Beginning in August of 2016, fans are only allowed to bring in one clear plastic bag (no larger than 12X6) or a one-gallon clear, resealable plastic storage bag, per person. They also will allow a small clutch purse not to exceed 4.5X6.5.

I believe you can i have seen other take their in.

I did last year

No

I do not think so