It's about a 15 minute leisurely walk. But if the queque for the boat to return to the resort is very long, there is a bus that is also available to take you to the PBR. We didn't take it until the last day we were there,, and were kicking ourselves for not trying it before. We were the only ones on it as well. The bus stop is just to the left of where the walking path is leading to the HRH and the PBR.