1. True about the airports, i got lucky and someone printed it out there for me. But def make sure to bring your ticket.
2. I was on a buddhist temple (visiting a "lost" israeli) and my friend had to go to the bathroom real real bad. He claims it was his worst experiance ever. Obviously it was just a hole in the ground, instead of toilet paper- the was a bucket of water to wash out the area, HA!!
3. The nice hotels are real nice, stayed at the intercontinental, they had a pillow menu, real cool.
4. Make sure to visit the chabad shliach, hes israeli but speaks a great english, hes got the only real kosher food in mumbai. Drop him a nice tip. And maybe hell give you a tour of the new nariman house thats being rebuilt.