Amy
I had the same surgery as you are going to have. back in June. I suspect mine was more extensive than yours will be since they removed about 40% of my jaw and rebuilt it with fibula. Also, I had a complete neck disection as well, along with tissue transplants from my arm.

That said, I woke up able to talk, and started eating within 4 days of surgery. Hang in there, and if you have any specific questions for me, please ask away
Wayne