Yes, the price for a rollaway is $25 a night....we usually just bring a twin size air mattress and it fits nicely between the bed and window at RPR. HRH will have a little more room in their standard rooms.
Doubtful you will get it free when will you be there? If available, the HRH has a 2 Queen Deluxe room that also has a sleeper sofa and it's much larger at 500 sq ft....that's what we have this time around. Can't wait!