We do our FP for 9:00/10:00/11:00 or there abouts close to it. Yes, we RD and try to hit a top tier at RD, then standby two or three rides that you don't need a FP for, then hit our 9:00 FP closer to 10:00. By 10:00, you are going to start seeing some lines, even if they haven't built fully yet. But we don't wait in lines at all. I think the longest wait we had our last trip (first week of May, crowd level 7) was maybe 10 minutes on Small World. That was it. Everything else was a nearly a walk on in the first hour or we had a FP.