Originally Posted by SK AAR

Yes of course it works. There is no difference from regular/other rates without extras such as breakfast, dinner etc. If the rate is higher for 2 guests, book the room for 1 guest and add the following in the box for comments: "2 guests - Hilton Honors spouse stays free".

I have done this many times in the past; never an issue at check-in (unless your rate included breakfast/dinner - but PR13CB does not include breakfast)