I made a reservation doing this and then called back to cancel one of the rooms. The agent started telling me that I couldn't have two rooms booked the same night using the promo, that is was for me and the other room would have to be points, yadda, yadda. She persisted in her explanation even after I told her the second room had been reserved for little kids (connected rooms were requested). It was really irrelevant at that point since I was cancelling the stay but if you have a problem, I'd say do the usual "hang up and call again".