If members of your household go to work/school/the gym/the pub/ the shops or anywhere indoors with other people,
And if you don't all self-isolate for 14 days before Christmas,
Then you risk giving Covid to your parents and grandparents if you mix with them indoors during those 5 days.
That's just a fact isn't it?
YANBU Yes, you will be risking unknowingly endangering your loved ones,
YABU ???