what if i dont have access to duo over the summer vaca? do deactivate my account?
You can purchase a "Streak Freeze" for ten (10) lingots on the lingot store.
For the Whole summer?
No, just one full day. But you can purchase another straight after if you have Internet over there.
During summer vacation, you'll have lots and lots of time to learn on DL. Bring your phone, keep your streak going. Set it to a lower level if you like.