I hope my daughter settles near us when she has her babies. I'd love to be able to give her the chance to take a nap, go to the store or do whatever she has to do. I know that it would've been much easier if I'd had family around when the kids were little!
this study - and previous studies did make the difference between the number of hours per week spent in daycare.
I don't think the situation you describe applies here.
I don't think there is much problem you having a break 10 hrs a month with anyone!
I'm thinking more the people who give them up every day or so.