If the rule is still in place, we'll almost certainly have Christmas at home just us.
My DPs and DSIS wouldn't host us at the moment, nor come to us, and my PILs will either invite us alongside cousins / SIL (which would be an unlawful number of people so we would have to turn it down), or if not I think they'd choose to see SIL over us.
OK by me. We've done it before, although after six months in the house just us it won't feel very special. Feel sorry for our young DC, who really love to spend Christmas with family.