I am going to have an easy weekend. So we have 3 boys 10, 8 and rising 2. We booked a lovely holiday cottage ages ago for a family holiday. Since than ds1 has a sixer and seconder camp to go too It is an important one as it will be his last and needs it for his chief scout award. Dh suggested that he go to cottage as planned with ds2 and I can do camp runs (60 mile round trip) and than drive to cottage Monday evening.
All I got from inlaws was along the lines of "O So you are going to have a lovely relaxing weekend with ds3. Clearly they have forgotten what toddlers are like."
Plus I already have "lovely relaxing days!!" with ds3 when older boys are at school.
When actually it's ds (their son") who has the better deal I think.
Although tbh I do pretty much all ds3 care anyway unless I am physically out of the house.
Aibu