chance to approve visitor visa to my parents and my wife parents?


My H1B visa decision staus is approved. I am going to attend stamping interview on september 20th in India.I will travel to USA on october 1st with my wife.

So, Parelly I am applying H4 for my wife.My parents/my wife parents should come with me on october 1st.

So, I am planning to apply visitor visa to both parents.

This is my first travel to USA on H1B visa.Once I traveled on B1-visa.

How about chance to approve visitor visa to parents?