Off the top of my head Rich, I'd risk the '81 with a roast, the rich lunch will hide the fading fruit and disappearing acidity. If it is absolutely gone to a dry and weird lacy substance, the sink is your friend, and you have the wonderful '82 to fall back on.
We know that the '82 will have just about held up. Your cellar is in very good conditions, It must be, I'd say, or you would have dealt with all your old growths by now. I have drunk lesser '82's at 20 years, and they have been good. 30 years is a big ask for anything other than the most structured and robust vintages. '81 is not one of those.
Please open one of them Rich ! If only for the sake of folks who have never had the possibility of trying them. Or at the very least, invite a claret nutter over on Boxing day
For me Rich, I've settled on a 2003 Listrac. Fourcas Hosten will be rich dark & sweet ripe, (slightly over baked fruit according to wine Profs) sufficiient tannic structure, and the acidity at Fourcas should carry it off with a barbie marinated chicken cooked in the bag for succulence.
My family will be here plus grand children. Three of us will devour the chicken and claret until only bones and sediment remain on the table

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For "Heaven's Sake" open that Brane Cantenac - Good luck with it, those soft corks could be tricky to extract in one, get the longest screw you have - I'm wishing you megga luck with the wine condition.