I don't believe any will occur, but if they do, then... maybe. I'm not worried about 25,000 people outdoors in a 100,000-seat stadium. Even if every yahoo attempts to bumrush the 50-yard-line, it'll be easy enough for me to stay well away from the masses.
The real problems I see are in restroom facilities which are pretty cramped and enclosed, concessions (which are unnecessary and avoidable), and mostly-- entrance and egress. On a typical gameday, there are tightly packed lines to get into, and out of, the stadium.
I suppose I could get there two hours early to avoid the entry lines, and stay an hour late to avoid the exit line. But now we're talking a 7-hour day inside the stadium. Which makes it even harder to avoid the concessions and bathrooms...