There are a variety of ways by which one can finance a university education. Having wealthy parents is the easiest. As long as you have enough money, then you are under no obligation to find a summer job.
No
Of course not. If you can afford not to, then you don't need to work.
no
It's not really obligatory in any way
no
no
No.
not really
No, it's not really obligatory in any way because it's summer break not graduation
Nope
No, as long as they have volunteer experience it's fine.
No, it's not mandatory. But if you want to get some $ then you should get a job. It depends on your age.