We're on the Valor for the November 29th sailing, too. We hadn't heard about the port change to Mahogany Bay until we read your post, and then did a little research. The new port is about 3 miles east of Coxen Hole, and east of the airport. If you have Google Earth you can find it by looking for the first cove east of the airport. There's a small island called Coral Cay - the port is just north of that on the east bank.
Here's a link to Mahogany Bay's webpage:
mahoganybaycc.com
And here's a link to a PDF that's got a lot of cool information and pictures:
http://www.mahoganybaycc.com/userfiles/files/MB%20October16,%20low%202009.pdf
It looks like a pretty amazing development, a major step up from the Coxen Hole port. And it opens on November 19, just in time for our sailing. Thanks for the heads up on the port change.
See you on board:
Jim and Terry