Just back and wanted to post some tips.
In HS, tried to grab G+ for SDD showed 9am and processed through to 2pm, I grabbed it. then purchasing RoTR at 7am, I was prompted to log in, losing time, and missed the window entirely. When I got to the park, I looked up drop times and saw that 9:32 was a potential time, so.... I chanced it and let go of the 2pm SDD, and scanned from 9:30-9;32, ended up with a 11-12. so can confirm this drop time works! HS def reserve more than one park day to attempt this, 1st day I missed RoTR, and at rope drop it was down. So instead we RD MFSR (were let into the parks before 8am, walked on MFSR) then walked around empty Galaxy's Edge for pictures, got in line around 8:13am for RnR, (line released at 8:30)and did that and ToT standby with low waits. Very good start to the day. This gave us ability to book G+ for RnR and ToT later in the afternoon. allowing 2 rides that day. MFSR was out but we had ridden once so not bad, we got RotR on another day thankfully