Here in the UK, Dr Jenny Harries, the current head of NHS Test and Trace, has told BBC Radio 4’s Today programme that “people can do their bit to reduce the spread of the new Omicron variant by reducing the number of social contacts they have.” This will be especially important at Christmas time, where socialising by definition is what season is about, so the recommendation is effectively a cancelling of Christmas, that could still go formal, depending upon how much the system freaks out over Covid Omicron.
https://summit.news/2021/11/30/health-boss-tells-brits-not-to-socialise-over-christmas/