The title is not quite nuanced enough. I'm wondering what others' opinions are on this
As a child (in the 80s) my parents sent me off in the summer holidays with my aunts to the seaside town they were all from. My parents stayed in the city to work and visited at weekends. (I had a great time I'm sure.) I was probably around 2½ the first summer and knew my aunts very well. I would have been in Creche all week otherwise and home with my parents in the evening.
As a parent now myself I wouldn't send my children away even though I can see that they might have a better time at the seaside . Would you?
For the voting
YABU - I'd send my children off with family members to the seaside
YANBU - I wouldn't send my children away without me