M&S have just sent me an email offering me a free 'Festive Food Box With A Cocktail', which I accepted with grace and alacrity. ^_~
Possibly account specific but a heads up, hopefully one which will be kindly received, even by the people who might not have qualified. ^_^
There's probably a finite amount set by so it's well worth checking and applying for one now rather than later.
Hope you get one too, good luck!
Forgot to mention, they even threw in free P&P!