So far we have done two summers in Israel. The first summer was the one we made aliyah, so DH didn't have a job, and he just did aliya things, with the kids around, and I WFH, so I frequently left him do it.
This summer, my youngest was just 4, we did a whole mix of things: One of my children has ASD, so he is in a specialist autism class, and they run most of the way through the summer, which was hugely helpful. My oldest is independent, he sorted himself out, hung out with friends etc. The youngest two went to a mix of day camps, school/gan camp (keytana), and they were home a bit and I entertained them, and we came to the UK for a week and a half for a family simcha (DH took off 1 week in that time). I work extremely flexible hours, and between the two of us we somehow sort of managed.
If we hadn't gone to the UK it would have been a lot easier, as I would have put them in different day camps the whole summer. It's too hot to go out much, and my kids need structure very badly. It's expensive to do day camps, but given we paid more in one month in nursery fees in the UK than the whole year in Israel, it balances out.
Ironically, my kids here have greater freedom and independence than they had in the UK; they take the bus on their own to and from school from much younger, and there are playareas literally everywhere.
I noticed quite a lot of anglos went in the summer to visit family abroad. With wfh, people can stay with family and go for longer.