We've done this with the kids probably the last 5 years. Were there for Purdue. They changed it a bit this year. In years prior, you waited in the concourse near the student section entrance gate for a bit while everybody got checked in and their wrist bands. Then at some predetermined time, they let you go down the ramp in a mad free-for-all. Which meant if you were motivated, you could show up after they suggested and still get a decent spot along the tunnel.
However, this year, they are queuing you down along the ramp, so essentially the first people to arrive and wait got the primo spot in the tunnel. They tell you to arrive 40 mins prior to kickoff. We got there about 45mins prior and had only a few people behind us in line. There was a LONG line in front of us. So even though we got there pretty early, we were definitely in the second row of people in the tunnel. We lifted our 6 and 8 year olds up, and some nice people in front of us let our 10 year old sneak in the front row, so it was fine. We probably waited on the ramp about 25 mins before letting us down to the tunnel.
I've done non-conference games in the past and it's been less busy. I think I'm going to do that again next year.