Two days into a thirteen day trip to WDW, FP+ reserved 60 days out even though I really hated the idea of planning park days that far out...
All of FP+ reservations were scheduled in the afternoon, at the time my daughter was not coming with habit changed her mind 30 days out.
Day one at Epcot was flawless, bounced from ride to ride in the afternoon without pause for the most part and even rescheduled Soarin'for an hour earlier than previously scheduled, best afternoon at EPCOT for ride in fourteen years and fifteen trips.
Day two at MK, rode rides standby all morning FP all afternoon except SM which was down during our resi but honored later without question.
As a skeptic I am more sold on the convenience than ever, still hate the scheduling part but absolutely love the ability to ride ride after ride without pause over a three hour period and think it more than makes up for the hassle.
Now... Today my daughters band would not work at a kiosk, the cast member was told to comp our food/beverages to make up for the hassle, save me $20 or more for a ten minute stop at GR in the way to dinner, not a big deal as the issue was fixed in five minutes.
Our first ride photo on MM is lost, not a big deal if it was our last photo that would be different.
So far not a bad experience,in fact I do like it better than FP, how much is not determined.