Doubts about B1 B2 visa

We have appointment on 7th feb at Mumbai consulate for B1 B2. Applied for family of 4 members. First time applying for vacation.

  1. What documents should we carry?
  2. My father has travel history of Botswana business visa( 10 months stayed during covid phase 1) and South Africa business visa(3 months stayed during covaid phase 2) both time on business visa… will it impact on our visa?
  3. How much bank balance should be in our accounts? Balance certificate or Account statement should we carry?
  4. Living on rented house having land and house at village. What are the chances of approval??
  5. What questions can we expect??

Thank you.