I was there

Sat in Section 113 (West side, 30 yard line, third row down from concourse). Enjoyed everything about the day: the game, the weather, the stadium. It was all good. Stadium is everything I hoped for, and was expecting. It will only be better next year when everything is complete. I love the fact that you can walk around the complete concourse. I doubt there are many, if any, bad seats in the house. Plenty of washrooms, although I thought they could be better marked, and maybe they will. The Maxtron is huge! Can't wait to see it in operation next year. It was also great to see so many people standing in the south end zone 'terraces'.
Overall, the stadium has a nice feel. It is a worthy successor to venerable Taylor Field/Mosaic Stadium.
My only real complaint was the sound. The music was way too loud. Announcements were not loud enough. I know these are minor complaints that will be resolved.