Tried to post on tablet again - there's a random posting around somewhere in the ether.
All the above suggestions for bingo entries are sound; add what you like. I've got the relative who insists that meal must be at Specific Time because of Not Very Good Reason To Do With His Children, which doesn't suit anybody else, and who then doesn't appear until Specific Time Plus 90 Minutes. Yes, to the voluntelling to collect people from the airport/take them home etc etc, yes to the personal remarks about weight and jobs and babies. Actual violence is generally considered bad form, although in the case of the relative who assumed that one player had burned part of the meal, because it was a home made version and didn't look like the packet equivalent, I think it could have been justified. She wouldn't have been convicted by a jury of her peers, is all I'm saying.
Be careful if making it into a drinking game - it might need a handicapping system. We tried it once and Ireland won, partly on account of simply having more in-laws than any of the rest of us, plus a truly clueless MIL and a toxic SIL. Ireland was stocious before the rest of us had washed up the breakfast dishes.
I have actually been known to print the card, laminate it, and stick it in full view on the front of the fridge, in the certain knowledge that nobody but me reads the notices there anyway. Everybody assumed it was just my Christmas To Do list being ticked off.