My parents are brilliant and I know I am very lucky. They have my 2 DS's 2 days a week while I work.
In a few weeks time, I have to go away with work (very rare) for 4 days and parents have offered to have DC's stay at their house, so that DH doesn't lose time at work (hourly paid). He usually leaves home c. 5am, but would have to start later if he is either to take them to my parents at a reasonable time, or to school breakfast club. He is perfectly happy to do this, but my parents don't want him to lose money
However, I have just learned that my sister is going away that week with her DH and has asked our parents to have her children for the whole week too. She doesn't live locally, so parents don't see their other grandchildren as often as they would like, so there is no way mum would turn down this opportunity to have them all to herself for a week. Mum says she is happy to have all 4 boys. She is an ex-teacher, a very young 60 yo and supremely capable, so I know she can cope, but she will have boys of 7,5, 20 months and 8 months for a week. I'm not sure I'd fancy that.
Trouble is she is adamant she will be OK and I think she may be put out if I insist DH has our boys. Or perhaps relieved? I have asked her and she keeps saying it will be fine. Dad will be there too, but not sure how much help he'll be!