I'd ask my parents (well I wouldn't have to, they always tell me to take my DH out.)
But when I was pg with DD , we went to viisit the PIL (8 hour drive for me)
PIL were looking after my nephew, (who they looked after 3 days a week)
I asked if DS could stay to play with DNephew while DH and I popped to the shops.
(DS got on really well with DNephew . He was 2 yo. DN about 4 yo)
FIL said he was TOO BUSY.
These were the PIL who complained they didn't see them enough. But only saw them if I made the effort to drive there.
I thought "Thanks for F**k All" and took DS with me (obv DS upset, wanted to play with DNephew rather than shops)