Well, most years I went to at least one of the two summer school sessions. Usually fun classes like Judo or Photography. A vacation somewhere in there, but my mom only got 4 weeks vacation. Always amazed at my friends whose parents who had enough vacation time to drive cross country and visit family for 5 or 6 weeks.
As I got older, spent a lot of time looking for a summer job. Applied to McDonalds 50 years ago, still waiting to get called back for an interview!