School starting later, advice please?

[Bougie]

One of our DDs and her family are coming home at the weekend from visiting family in Ulster. She and her partner return to work on Tuesday, both have very stressful and busy jobs. She has just today learned that their kids primary school starts 4 days later than they thought so they'll have 4 days with no childcare (their usual minder is away.) We we live nearby and could easily look after the children but we are high risk due to health conditions and have been strictly social distancing and not having people over. Everyone in the Ulster family has been isolating so it would all be fine except the flight back to England and taxi home from the airport when they might pick something up. DD says between them they'll take time off to care for the kids, but I know their jobs are vulnerable and this is a risk for them. We love the kids dearly and I feel we should offer to have them. DH is a bit less keen, he has had months of treatment and says he doesnt want to get Covid at the end of it. But he likes having the kids too and both of us really want to help DD and family. Can't seem to untangle the best way to think about this somehow.

How old are the children and how easy would it be to look after them outdoors? Much less risk outside. So, park in the morning, let them use a separate loo to you to wash hands etc (if you have more than one loo); picnic lunch in garden (assuming you have a garden); outdoor playing in the afternoon? Then very low risk to you. If they are slightly older you could let them play outdoors whilst you enjoy a cup of tea, keeping half an eye on them...

@DownWhichOfLate

How old are the children and how easy would it be to look after them outdoors? Much less risk outside. So, park in the morning, let them use a separate loo to you to wash hands etc (if you have more than one loo); picnic lunch in garden (assuming you have a garden); outdoor playing in the afternoon? Then very low risk to you. If they are slightly older you could let them play outdoors whilst you enjoy a cup of tea, keeping half an eye on them...

They're 6 and 7, we live in a city area, and we do have use of a nice garden but no direct access.

Or could you go to their house and set up Granny's garden camp. You could bring your own lunch and DD leave sandwiches for the dc. At 6 & 7 they will have some idea of social distancing if not perfect.

Granny’s garden camp sounds like a lovely idea, & if you are v close by you might even be able to do half days if your DD & SIL are able to do some flexible hours / cover any rainy day : my mum is shielding but sees family in garden as low risk