Barry,
You are actually getting the same surgery I had, mandiblectomy w/fibular free flap, done at the same hospital.
Here is a link to a video of a patient that had the surgery at the UWMC
http://www.youtube.com/watch?v=d7jW5wTosR8You're case is a bit different then hers as she never did have radiation. It's an informative video.
Remember though, everybody is different...my experience was different then hers and there are many variables to it. You are still at one of the top programs in the States and I believe good hands.
Feel free to ask any specific questions you may have...but as far as it goes, I had the surgery and am still alive almost 2 years later.