We hosted Christmas one year with both families coming for brisket.
The beautiful December weather went wIndy like I’d never seen on Christmas Eve night. Of course.
We broke out every card table, lawn chair, etc. (anchored with firewood) to fashion wind breaks on all sides; the wind shifted direction every few minutes. Cursing was heard.
It‘s funny now, but it was a nightmare then. Brisket turned out great, but just took a little extra time.
Always start the cook early when company is coming. Brisket will hold hot as heck in an ice chest for hours. And that time will do it some good as well.