We went in 2014 and had a blast. One of my favorite road games. The fans were fantastic! I said in another thread, almost too nice, where we were wondering if they were secretly poisoning us or something.
We had dinner Friday night at Lazlo's and I can't say enough about how awesome that was. The service was literally almost too good, the food and beer were awesome. It is attached to Empyreon Brewing, so that's the only beer you get. We had breakfast Saturday morning at the Green Gateau, which was also amazing. We went to a bar by campus after the game (can't remember name), but it was very fun - the Nebraska fans couldn't have been much nicer. Someone literally dropped a pitcher of beer at our table and said "good game", shook our hands and walked away. I can't remember where we ate dinner for sure, but it seems like it might have just been Granite City because I'm almost sure it was a brewpub nearby our hotel and that's the only one I saw when I just looked it up. Unless it was something else then and changed hands? I just can't remember.
We didn't tailgate, so can't speak on that.
If you have half as much fun as we did it will be a phenomenal trip.