Me? I'm going to give myself a week off.
I'm going to quit my job. Tell them why. Say my goodbyes.
I'm going to take all my money out of savings. (I have a really, really good life insurance policy through three people, and no one is dependent on me, so.) And spend put it to good use. I'd visit my little brother, who's having a baby this year. Give him and his girlfriend some money to put away for college for my to-be nephew.
My life insurance should cover any funeral expenses and I have no debt at all, so I should be good there. I have a will as well, so that's set.
I'll probably schedule a bonfire almost every night, drink and have fun. I'd play games. Maybe meet some of my CoD clan friends who are like a second family to me.
I wouldn't tell anyone until the last day what was happening. I don't want crying or carrying on. No. The best person I'd want to be around is my best friend if this was happening. If I really had no chance and no way to change things. We'd just hangout, chill, drink, whatever. Lots of gaming. No tears from us. My parents though. Geez, that's another story.