jerry a. laska jumped past me on the way to get the T&Cs, but he has quoted the HHonors "Bible", and that's how it is supposed to work. OTOH, some chains (mentioned previously - see Points Scrounger, directly above) do not provide points for incidental expenses; they still should provide stay and nights credit.

If one does not get stay / night credit from a reward stay, call / e-mail / pester them until the follow their own T&Cs. Call, and if necessary, call again - get a case number if they can;t resolve it immediately. 'Cause you're dealing with the heart of <Black> stone.