Just found your post, hope this reply isn't too late to offer my advice. We stayed 4 nights at PBR in 2006 and just last month we spent 4 nights at the RPR. We all agreed we liked the PBR so much better.
Both trips we arrived at hotel at about the same time, at PBR we got right into our room, at RPR we had to wait 4 hours until our room was ready. Yes they held our luggage and we went to the parks, but it would have been nice to get into the room and situated first.
We were very surprised on our second day at RPR we spent all day at the parks and returned to room around 4pm to cool off and relax a little. House keeping hadn't been to our room yet so beds unmade. Felt like we didn't want to hang in room and have to be interrupted by housekeeping when they did make it there. I called desk and was told that housekeeping works until 5pm, so could be as late as that. I was told if I wanted morning service, I would have to call every morning and request it. I did do that and it worked, room was always ready when we returned early, but was just one more thing I had to do. When we stayed at PBR I am not sure what time housekeeping works, but room was always done when we had returned.
It also seemed as though the ferry to the parks was a little more consistant and frequent at PBR than at RPR.
While we enjoyed our stay at both, and I know you will enjoy your stay no matter what one you pick, we will not stay at RPR again...I guess we were spoiled by PBR.