Park in town and use the EAA run shuttle buses from the UWO college halls to Airventure and Wittman Terminal- was $2 round trip back in 2000.
What types of a/c? Suggest you check out http://www.eaa.org
Only 2 days though - well this time maybe, but next time (and believe me there will be a next time, and another ...) you'll be there the whole week - 5 days was barely enough time for me to see everything.
Make sure you have a flight on the Ford Tri-motor - around $35 - experience passenger flying as it was once.
Have fun and soak up the atmosphere of the greatest aviation event on earth.
Lucky sob - wish I was going, maybe next year for the Wright Bros Centenary show - time to visit my bank manager I think.