If you have to spend time in the company of people or a person who irritates you avoid alcohol.
If you feel you have stayed long enough - you probably have.
If you go out Christmas Eve don't drink so much that you can't eat your Christmas Dinner ....... the cook will not be impressed and it spoils the atmosphere on Christmas Day.
If your a driver remember that you can still be over the limit the day after.
If you have a roof box stick it in the back garden and put all of the beer in it ...... it keeps it lovely and cold and you can lock it.
If you need more fridge space and have a 3 way it will work in your house too as will a camping cooker and mini oven if required.
More tips welcome