The holidays can be rough.
Why, do you think the holidays can be rough?
I have visited families and always wonder when the visit will come to an end.
Holidays can be stressful if you feel like you're forced to do something. People should do what they really want on their time off.
That ain't what they are doing. They are just drinking a lot and trying to cheer themselves up but it don't work.
Holidays can make people stressed so they do things they don't normally do. If it bothers you that much you don't have to stick around long. You can still visit with family and then leave and let them know you prefer not to be around those that are drinking.