I went in October 2014 and it was everything I hoped it would be. We arrived on the evening on Oct 20 to muggy humidity (no doubt tailing air from Hurricane Gonzalo), which I expected, but after that, the icky humid went completely away for the entire rest of our trip through October 28!
We did not experience any of the issues mentioned above at all...bathroom was clean every time we went, our magic bands worked perfectly (save for the detail below that was fixed), all our reservations were honored, nothing broke down, and every amenity we wanted was granted.
On the whole for the trip, we waited in hardly any lines and breezed right through, due to reserving FPs for everything at first opportunity. We got into all of the best restaurants we wanted, since we'd prepared with the reservations, again first change we had. Food was great everywhere we went. Some of the seating wasn't the best, at Coral Reef we were in the last row at a corner table furthest from the fish tank, and at Raglan Road we sat on the far left where the bar decoration blocked our view from the stage, but everywhere else our experience was really top-notch! Our favorite places were Jiko (there, we got to sit right near the kitchen where we saw everything) and Teppan Edo (great, entertaining female chef!), and, amazingly, high tea at the Grand Floridian, where we really did feel like royalty. We got to experience every ride we wanted (though none more than once). Also did the Halloween party and the Villains Soiree, and enjoyed every moment.
We even experienced serendipity. During the Halloween party, we had a Villain's Soiree reserved parade/fireworks viewing spot. But after the parade, we left the area attempting to finish a Sorcerers Magic Kingdom quest. About 9:15 we tried to return for the 9:30 show, but every path back was completely blocked by crowds. However, a helpful cast member suggested circling around the side and watching from Liberty Square for a better experience. And while we did miss some of the main display from that vantage, the sound was truly fantastic...we could see the launch points of the fireworks, the booms were louder, and we could even smell the smoke! I think that made the experience even better than what we would have seen from the reserve spot. And there were some projections on that side of the castle, so the visuals weren't entirely absent either.
There were a couple of snags, but all of them were minor and all easily fixed. 1st - one of our party member's magic bands didn't work right away, due to a different e-mail being on the registry. We could have gotten a replacement band easily, but my girlfriend wanted the one with her name on it to work, and Guest Services went above and beyond to fix her existing band. It took an hour, but after they were done they gave us a complimentary FP for our whole party.
2nd snag was our lunch reservation at the Crystal Palace. We were seated 45 minutes late, but again, they gave our party a FP for our trouble, so we didn't mind that either, and we still made our original FP time.
And the only other unenjoyable thing was the Saturday we were at Epcot on Oct 25...something out of our control since ANY Saturday at a Disney park is likely to have big crowds no matter what time of year it is. We had been there the previous Tuesday, and food lines were short and we had a marvelous time. But that Saturday, the crowd were huge, lines were VERY long, and we were not able to get any of the snacks that interested us. Still, with the FPs we'd reserved plus our restaurant reservations, we still managed to have an amazing time that day. Instead of waiting in interminable lines for Food & Wine bits, we spent our non-reservation times shopping, taking photos, and going on rides where lines were short or nonexistent even without FP. Figment and Living with the Land had ZERO wait times, even with the big crowds there, and we really enjoyed them.
I loved it so much that I booked a bounce-back trip and will be going again this December. Can't wait to do the Christmas party!