I wish they’d either announced a free for all or extended the window by a week.
We usually alternate between my family (200 miles away) and staying at home since we had kids. (DH has no family, before anyone accuses me of being a terrible DIL). In theory, it’s our turn to travel. We have one DC in school and one baby. We both have to use public transport and work in offices at various intervals over the next few weeks. So more risk factors than some people.
DM is CEV but wants us at hers. She really wants the DCs for Christmas. Various levels of emotional reasons and pressure which I won’t go into but it may be her last Christmas (or may not). DB (no kids) wants to be with my DPs too.
DSis doesn’t know what she’s doing but always sees my DPs on Christmas Day (and is in a childcare bubble with them). DBIL has a rather overbearing set of DPs and I’d be very surprised if they’re not there for Christmas - wherever possible, my DSis aims to have everyone hosted so DBIL doesn’t have to tell his DPs he’s not coming for Christmas lunch.
DSIS thinks it would be quite convenient if we didn’t travel as then she might be able to persuade DPs and DB to celebrate Christmas with her in-laws (two households of in-laws so that would be five households without us). 
Originally I wanted us to visit between Christmas and New Year to reduce the risk of passing anything on, but of course that will be against The Rules even if it’s more sensible. The roads are clearly going to be a nightmare as well.
The sensible thing is clearly that we stay home. Would anyone like to tell my DPs that for me?!