I was thinking about this - because it looks like we will be allowed to have similar here.
DSiblingA already bubbles with DPs.
DSiblingB and OH will definitely also be there.
DSiblingC, OH and DC want to be there if at all possible.
So even allowing for DSibA already being "a household" with DPs, that still means I cannot visit with my DH and DC. (And nor can DSiblings E or F, and their respective families - but they have overseas travel involved).
At present, we are not allowed to travel more than 5km, and it will reduce to not outside your county from next week (we hope). Sibs A and B are in the same county as DPs so have both seen a lot of DPs throughout the year, whereas SibC and I are in (2) different counties and have not seen each other or Sibs/DPs very much at all (I've seen DPs twice this year other than NY gathering, SibC possibly 4 times, and SibC and I have also met twice).
THen you look at DH's family.
DSiblingA, OH and DCs live next door to DMIL, but as there is another adult in her household (her own DSibling in granny-annex), they may not be considered a single "household" (if you were strict - it would already be 3 households there).
DSibling B, OH and DCs are also in a different county (also different to ours). So we have the same "have barely seen each other and DMIL" issues on that side.
So if I wanted to see my family, there would be at least 4 and strictly 5 households involved.
And DH would also be looking at 4 possibly 5 households.
And this is further complicated for DH and I by the fact that DPs and DMIL only live 20 minutes away from each other, and 2.5 hours from us - so if we travel to see 1 side, we MUST also see the other.
And while both DPs and DMIL (and DH's DSibA) all have large gardens (my 2 DSibs locally have very small ones), none of them are suitable for an outdoors gathering for various reasons (including a lot of long wet grass in both, and no shelter in either).
I know the locals will sort themselves out.
But those travelling have some hard decisions to make very soon - and it is actually upsetting me today in a way I didn't expect because I know they won't accept any of our decisions and I miss them but I am vulnerable (asthma) as are all the DPs/DMIL (all into 70s and all have underlying issues), so we have been doing the right thing all year (while a number of various DSibs have not been - some have been absolutely doing it all right - but some have held big family gatherings for communion celebrations even though the ceremonies themselves were cancelled, have had overnight visitors when no one allowed in to another house even for a coffee, have been supposedly self-isolating due to potential exposure in workplace but out shopping and getting coffee in restaurants before results of tests were known....) so it feels all sorts of wrong to say we can't go because there are too many already, but we miss them all...and the locals will absolutely NOT give way to the travelling family members - they will expect to be part of everything too.
Sorry, this is somewhat ranty, but I am feeling blue this morning. And trying to think of reasons why we shouldn't be travelling because the virus does not take a holiday either, when I really want to go see them all. How much of a risk am I willing to take - for myself, and those around me? And how much do I need to consider the actions of others, and where their personal limits will lie (which based on experience to date this year, is often way beyond what is actually allowed at any one time!)?