Heinz Field is a great stadium venue. The parking situation can be improved and better traffic management. However, this historic stadium is a great place to watch the Steelers or a concert.
My wife and I have been to two Taylor Swift concerts in the last four years, Speak Now and 1989 tours. The staff has always been very helpful and I love the views all around the stadium.
They let you bring plastic bottles of unopened water and food as long as it's in a clear plastic bag.