We look after two dgc (10 and 7) for one day each week since the eldest was 6 months, they are dropped off at 7.15am ready for school and I have breakfast practically ready for the table. A third dgc (8 months) will come to us one day weekly from January but on a different day.
I may have to duck here and may be considered selfish .... but I can't think of anything worse than looking after any of them in their own home even if it is only a 15 minute walk distant. (5 minutes in the car). Spending 11 hours in someone else's house.... agghhhh.... I'd be thinking of all the things I could be doing at home whilst providing childcare, in the garden, prepping dinner, ironing, etc. etc. When dgc are with us during school holidays it's surprising just how much house stuff can be done while still having fun.
And as a by.... the children seem to just love being at our house.
I reckon what I'm trying to say is if I'm doing childcare, it's done in my home. The dgc are also dropped off to us. If we are helping out by giving 11 hours of our time it's little enough that they are dropped to our home.
Of course, in a case of an emergency we'd do whatever needed.