One glass of white wine on Christmas Eve, quite a few on Christmas Day and one on Boxing Day - and no serious ill-effects.
By this morning my skin was getting a little dry and itchy and red spots were appearing so I decided that was enough wine for this year. I still don't know whether I succeeded in getting a cold. I have had the snuffles over the holiday but it might equally be a mild reaction to my indulgence. I took a montelukast on Christmas Eve and one on Boxing Day and so far as possible avoided any other substances containing salicylate - no stuffing, no sausages, no caffeine and no dark chocolate. The turkey was tasty and I had sticky toffee pudding instead of mince pie - a suitably filling alternative. Somebody put pepper in the red cabbage so I had to avoid that - but there were plenty of sprouts and carrots.
All in all a good Christmas!