Searching for R space on a sna-sfo-hnl for a long weekend for myself in March. I saw R availability out and back to HNL on the 764, however no R space on the positioning skywest flights (which I obviously don't care about). Before I clicked "buy now" I called the premier desk and asked the agent to book it for me and apply the RPU. Within a few minutes it was completed with no worries.