Judy -
We're headed that way this year (with a stop in
Chagos, so long as the regs still
permit it), so I've been scouting out the same sorts of info for the past month or so. I used Jimmy Cornell's World Cruising Routes to confirm that our planned
route and schedule was feasible, and then I went hunting online for accounts of recent experiences. We also have a copy of the
Indian Ocean Cruising Guide, purchased online from Landfall
Navigation, but I haven't spent any time with it yet so I can't vouch for its usefulness.
Check out the Hacking Family's website. They did a fantastic job of documenting their
Indian Ocean cruise.
Indian Ocean Cruising
Stolen Kiss's blog has great info on the Andaman Islands (which you didn't mention, but might want to check out) as well as some other stops in the North Indian.
Yacht Stolen Kiss
I'll be blogging as we go, so if any of the rules and regs change, I'll post about it.
Cheers,
Danika