Your avatar and username make me assume you must be new here. In Memorial Stadium, you stand your butt up from the coin toss until both teams are off the field after the game.
Someone is behind me who wants me to sit down? I ignore them, and if they really get on my nerves, I tell them to shut up. Getting into a Nebraska football game is hard to do and if I'm lucky enough to scrounge a ticket, I'm going to have the best time I can and support my team as best I can when I'm there.
Fair enough I will wear some comfortable shoes and be ready to stand the entire time. I will probably be so jacked just to be in the building I won't be able to sit anyway. One of the reasons I read this site is because I'm almost giddy over being able to come to a game at one of college footballs great venues, so standing up during the game won't be an issue for me. I just hope you folks are kind to visiting fans who aren't wearing red and don't know all the protocol.
I have always felt bad standing at games. I'm 6'4" and don't have an issue seeing over many people, but I imagine when I am in front of someone especially if its a kid or older person then I am ruining the game for them. Since I don't sit in a particularly raucous section normally I just stay in my seat as much as I can as a courtesy to others.