Very interesting. I was there early this year. I am very curious how this will work given the rules for travel in Bhutan. (Putting aside the business visa approach mentioned above...) you can't just book a hotel on your own. You need to work it out with your tour provider. I wonder how Starwood will work into this? For our tour, we spent the minimum daily amount per person and stayed at decent hotels. It isn't like we could then spend less by using points with SPG.
Color me curious.