For breakfast, consider La Sure's Cafe. It's across highway 44 from the northwest corner of the airport. Excellent breakfasts--worth a stop. I make a point of going there at least once each OSH trip.
Cary
"I have slipped the surly bonds of earth...,
put out my hand and touched the face of God." J.G. Magee
Google maps usually has a good eye on Chicago traffic. I'd make a game-day decision based on that.
2016 1st time Oshkosh visitor, 2017 was hopeful but just not to be..but see my 2016 and upcoming 2018 adventure on mikelynnweb.wordpress.com Celebrating the RAF100