Visitor Visa - B2

Hi,
My parents-in-law went to the Chennai consulate couple days back for their visa interview. Following were the questions asked:
1) why do you want to goto the US
Ans: visit children and tourism
2) where do your daughters live
3) what visas are your children & sons-in-law on
4) what is your annual income and what do you do for a living
5) how long do you plan on staying in the US
6) Have you traveled abroad, if yes, where
7) Have you or tour wife been to the US before
8) How many days do you plan on going

All in all, easy and straightforward ..

Documents taken:
1) W2 forms - last 2 yrs
2) Tax filing forms - last 2 yrs ( both state and federal)
3) Invite letter
4) Last 5 months pay stubs
5) Last 5 months bank statements
6) Employment proof - letter from company
7) Visa/Passport copies
8) What parents took:
- Employment proof, i.e. pay stubs etc.
- Tax forms
- Property documents
- Bank statements
- Passport (ofcourse)

No documents were asked .. Good luck & stay truthful!