I think one of the best things you can if/when you do go visit is treat him like a normal person. Don't bring up the cancer and all that. He's thinking of it enough as it is. Talk about normal stuff like crap at work, some of the stupid things you guys got into. I wouldn't attempt the alcohol smuggle, but you might be able to talk to his doctor and see if you can get permission to bring it in. Not sure how they'd feel about a dieing guy getting a last drink.

__________________
"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf