The guidelines were set down as:
1) Let n be the number of sand people. You supply 2 x (n-1) bottles to GL.
(looks like n =6, you supply 10 bottles. That puts 2 bottles in each case, except your own. You get a Christmas present of 10 bottles of beer)
2) Bottles are 750 ml.
3) Bottles to GL (thats me) by 4 Dec.
Now, here in the west we are flexible. You can use 375 ml, but it would be better to double the number of bottles so we get the same amount each. You can make it all the same brew or you can mix it up like Batz has. But you have to keep to the spirit of the concept.
Its not some old bottles you had hanging around at the back of the shed. Its a brew you created, crafted and nurtured, to the best of your current brewing capability, with the specific intention of providing your AHB chums with maximum drinking pleasure over the Christmas period.
Dont forget some brewers are their own worst critics. Whatever you produce is going to be tasted with interest by your AHB chums.
And if I have to type out the guidelines again, someone is going to end up writing lines!