Now that I've visited the Giant Toilet, I can comment on that stadium.
What a huge piece of garbage! Before the game, I walked halfway around the stadium before finding a men's room. At halftime, a number of fans around me got into the aisle in an attempt to head up to the bathrooms or concession stands. The people were standing in the aisle heading up to the exit tunnels around row 70, since most of the stadium is below street level (I was in row 27). For at least 5 minutes, the people near me did not move a single step, there was no movement at all in the aisles. They weren't back in time for the second half kickoff.
I was very fortunate in terms of seating space. I was on the aisle, and I think the seat next to me was emtpy, so I had plenty of room. For the majority of the game, we were all standing whenever the ball was snapped. The crowd noise was nothing near what you hear in the 'Shoe, or at Beaver Stadium or Camp Randall. It's a combination of the fans' (lack of) effort and the shape of the huge bowl (it's hard to believe it has a bigger capacity than PSU's). I didn't see many people shaking keys, as I've seen on TV in the past.
After The Game, I was close enough to walk over to the Buckeye fan section, and be close as the players sang Carmen, Ohio with the band behind them. It was great to see how juiced the players were after the win, with some of them jumping into the stands to get their pads pounded on, Lambeau-style.