G+ actually worked pretty well for us last week. I'd purchased it for length of stay when that was an option, otherwise I might have skipped purchasing for EPCOT and AK. But our days went pretty much like this...
EPCOT - booked VQ BG for GotG at 7 am and then LL for Remy. Remy was down during the morning and we got an automatic "any time" LL for it. After riding GotG, I was able to book a LL for Frozen that was only about 45ish minutes in the future. After that, I ended up having to keep checking and waiting for return times to get late enough for TT, Soarin', & SE because we wanted to just spend some time walking around World Showcase, sampling Food & Wine, and seeing Voices of Liberty and the American Adventure.
Eventually, I went ahead and booked Soarin' for essentially an immediate return time. The line was only about 15 minutes long and pretty much to the merge point, so it didn't really make a difference. Same with Spaceship Earth. I was able to book a LL for TT, but due to weather, it closed and never came back up, so I didn't ride TT this visit.
DHS - I booked LL for SDD and then ILL$ for RotR. Slinky was down during the morning, so we got another "any time" LL for it. I booked MF:SR as our next LL and didn't have to wait two hours before our time and eligibility to book the next one. We then got LL for MMRR. We used our any time LL for SDD (bypassing a 1-hour+ line) and then went to our RotR ILL$ reservation around 1 pm.
After that, I booked a LL for ToT, which was essentially an immediate return time, followed by RnRC (again with an return time that I didn't have to wait for). I then booked a LL for Jungle Cruise (one of the few rides with a return time late enough).
We hopped back to EPCOT to get some more Food & Wine samples for our evening meal and then ride the monorail over to MK. We got to MK around 7 pm and I immediately booked another LL for Haunted Mansion. We rode JC and HM. We then rode Pirates using the SB line (it was a walk-on, so no point in booking LL for it).
I had pretty good luck stacking LLs for the park we were hopping too, but because it was a lot less busy than previous weeks, I kept having to wait until return times were late enough.
For AK, I booked ILL$ for FoP at 7 am. I knew we weren't going to get to the park early after being at MK until almost 1 am, and return times for the Safari and NRJ were both too early, so I nodded back off to half asleep and woke up every know and then to check my phone... return times still too early. Eventually, a time popped up for NRJ that was late enough for when we would be arriving and I snagged it. We got LL for the Safari next, and then one for FotLK.
SB lines for Dinosaur, EE, etc. were really short. No need for a LL and because a bad thunderstorm was threatening, we decided to skip the other rides and head back to the resort anyway.
Overall, I was satisfied with G+. Using these strategies, I was able to get as many LLs in a day as I used to get FPs in the old days. Ironically, I think I could have gotten more if it had been slightly busier because I would have been able to obtain LLs with return times late enough and started the clock for my next one sooner.
For some of the rides, lines were short and it didn't save us a significant amount of time, but it was good "insurance" because it did save us between 45-90 minutes for several rides throughout the week. It really enhances a visit for us when we don't wait more than 15 minutes for ANY of the rides.
