I'm confused. I was just searching around for a Chicagoland hotel for October 9. There must be something big going on there that weekend, because a huge number of hotels show "May Be Available Diamond Privilege" in the availability block in the regular booking engine.

But when you switch to the reward side, some of those same hotels (not all) show "Standard Hotel Reward Available" with the green check mark. The ones that don't say that say "Diamond Desk. . .Call for Assistance."

I just sort of assumed that if you are in a position where you have to use Diamond Force to buy a room, there would certainly be no reward rooms available at the same hotel on the same date.

What am I missing here?