There really is no long line issues, you can pretty much walk up and buy a ticket/wristband.
Another tip is to sign up for text alerts link http://www.airventure.org/news/2013/...xt-alerts.html
The weather alert is not that interesting OSHALERT to 69050
But for notable features and attractions OSHFUN to 69050 is more informative.
Don't forget to listen to EAA radio 96.5 FM and listen to Stuck Mike, Magneto Mel and Digital Dave.
If you have a smart phone you can buy a $3 App from LiveATC and listen to Live KOSH Air traffic Transmissions.
You do not need the App if you listen from a computer.