Visitor Visa - B2

Just wanted to drop a quick note. This website helped us immensely on preparing our in-laws for their visa interview and they got their visa approvals at Chennai this morning. We had prepared all documentation per this website and prep'ed them on the possible questions. They asked FIL four questions and no questions for MIL.
Questions were:

1. What do your son-in-law and daughter do in US?
A. Both are working..(details)

2. What do you do in India currently?
A. Retired with pension details, house details etc.,

3. What is the reason for your intended visit?
A. Sight-seeing and social visit (to see daughter and son-in-law)

4. How long do you want to stay in US?
A. Prefer 6 months so our son-in-law and daughter can take us around over many weekends. However if you feel less than that is appropriate then that is fine too.

Officer approved visa and told them to enjoy their visit.

Thanks
-Bhola