Hi Irfan,

Arrival Visa is can be extended one more month for Indians, So two months your family can stay in Qatar.

Four things need to be Shown in Indian Airport...

1. Your Wife and Child Passport must be 6 Month Valid from the date of Entry.

2. Return Air ticket for your after 30 days from the date of Entry(Later you can postponed the Air ticket )

3. Hotel Booking is needed, if you are not coming with them.

4. Debit or Credit card needed, But, no need to show the balance.( Card under your name or wife name)

That's it... I have shared my own experience...

Doha Welcomes your Family....

Cheers...