Did anything go terribly wrong? (I mean with the food, not a drunken uncle, etc.) I'll start.
I learned that if I roast a turkey in my small oven, remove it when it's done and then crank up the heat in the oven to 450 to roast vegetables, there is no stopping the smoke alarm. Opening all the windows would not do it.
The smoke alarm is part of a security system (we live in a sketchy neighborhood) and I also learned that the security company can be counted on to call the fire department when the smoke alarm goes off. First they tried to call us, but they called my husband's cell phone, which could not be heard over the din of the smoke alarm.
The crisis is over, but the house retains a subtle whiff of incinerated Brussels sprouts. Next year, the vegetables will be salad.