I just joined this forum - have been a long time lurker and I felt it was time to contribute to the forum having been thru the process myself.
My twins were born in Mar of this year - at 35 weeks. Generally speaking from what I had observed, most singleton pregnancies stretched beyond 34 weeks if there were no complications. For twins, 35/36 weeks seems to be the norm. IMO, that is also fine - we as mothers with our medical history tend to be worriers - even I am one.
Dr. Patel it seems does try to push for normal deliveries for all singletons. I had even seen one case where the baby was born at 39 or 40 weeks - Dr. Patel did not see a need to go for a c-section and let her continue. The result was a happy/healthy 3+ kg baby who was discharged after 1 day in Dr.Anita's NICU.
If you have any specific questions, relating to twins, please feel free to msg me or post here. I will try to reply based on my own experience.
Reg. what to bring, for twins, the general expectation is that they will be preemies. So, would be wise to get preemie diaper, low birth weight formula ( I used Emfamil Enfacare), preemie clothes from US/elsewhere. I have not seem them in India and I live in India.
The 34th week scan is the most important. Dr. Patel will give you a fairly accurate date of delivery by that time - esp for twins.