Its very simple this game. You are stranded on a desert island. You have the usual resources that you would take to camp, including a milk bottle, some paper, a pen and a bottle cork.
We are all on the island and we have 7 days to live before we would starve.
All you need to do is write what you would do during those seven days and what you would put in the message, on whatever day you send it.
Once you have written your diary (as I will call it), I will read it and tell you what happens - do we survive or starve.
Now be creative!