You might try the Amtrak guest forum at
http://discuss.amtraktrains.com/index.php?/forum/124-guest-forum-for-amtrak-questions/
Not for India but lots of people on line that travel trains a lot. Might get lucky and find someone with the info you want.
Paul D
N scale Washita and Santa Fe RailroadSouthern Oklahoma circa late 70's
Has anyone traveled on the Maharajah‘s Express in India? Anything you can tell me about the experience?