Happy to help! Keep us in the loop.
My wife bought me a few pairs of tie string pajama pants and they were great. Some comfy slippers are good to pack.
Pack a laptop with wireless access so you can let us know how things go and ask more questions.
It seems most hospitals have free wireless access in the rooms these days.
Also, he should pack his own razor. Those hospital razors tend to lead to stitches or using enough toilet paper to stop the blood that he'd run out. Going to be using plenty of TP anyway (for what it was intended).
Be sure to MAKE him walk, even if he doesn't want to. It can prevent complications (like I had). Ask the nurses about that walking business. They can tell you experiences they've had with those that "Didn't feel up to it" versus those that "Did it anyway".
Pack a book or two for yourself. He's going to be in and out of it and you'll want to have something to do instead of sitting and staring.
Best of luck!
Mike