I just got back from 3 days in the parks (11/29 DHS, 11/30 EPCOT and 12/1 MK). We bought Genie+ for all days, at $15/pp.
Overall, Genie+ was fine. It worked as intended. We were able to LL nearly every ride, unless the line was super short or we were in between pick windows. We didn't need an ILL, chose not to ride Seven Dwarfs for the umpteenth time, but it was readily available. I did not care about drop times in the end, bc we were able to get a LL when we wanted it.
Crowds were fine. MK worse than others, but we never felt uncomfortable and the waits were low.
DHS - Rope drop Rise, 7AM LL MMRR, etc, etc. (SDD LL was available early, but chose not to ride)
EPCOT - 7AM VQ for Guardians, 7AM LL Frozen, LL Rat, etc, etc.
MK - 7AM LL Jingle Cruise, LL Peter Pan, etc etc etc.
Dislikes
- Buying G+ each day is annoying.
- Wasn't 100% clear that once a ride broke and we got an Alternate Experience LL, we didn't need to select the ride, just tap in. After doing it once it was obvious going forward. Also, Test Track broke late, so we were able to use the Alt in MK the next day.
- Old FP style next available made G+ useless at times, bc nearly every LL was available NOW, but we wanted it for hours from now (example, Living with the Land, we wanted when it was dark for the Christmas lights).
- Not being able to select a new ride w/o cancelling is annoying, but we rarely adjusted our schedule.
I would buy it again.