I rode the Haunted Hayride last night, so I thought I would bump this thread back up to report.
First, when I went to buy the tickets about 9:30 am, there was no line (for hayride tickets... lots of people paying for trail rides and dealing with the kennel itself). The CM initially did not want to take my debit card and demanded either a room key or cash. I explained that I was not a guest and did not have that much cash on me. She grumbled and said that they really don't like "to do it this way" but took it. As I was leaving, the family paying for a trail ride asked about the hayride, and the CM started with "There were people lined up here at 7:00 this morning..." No wonder she was having a rough day.
You arrive for the hayride and line up, then they load you onto the hayride cart. There is no hay anywhere in the cart. There was a large group in the cart of us, freaking out because three of their party weren't even back to the campground yet, and one had wandered off to go get her cellphone, which she had left in the toilet. Someone in the group mentioned having stood in line at 7:00 am for these tickets to be sure they could all be on the same hayride, and they had BETTER get back in time. Tempers and attitudes at evening events at Disney are always prone to the "it's my vacation, too" syndrome, and some of these folks were obviously suffering from it. One woman was on her phone, telling someone, "I don't care if it says 'no carts'! You can squeeze through there, so just DRIVE! Go really fast, then park and run down here as fast as you can!" The next hayride wagon pulled up behind us and they had to move our wagon aside. The CM who was driving the wagon announced that we would wait for the latecomers, but as soon as she started backing up, there was a panic among the people who didn't hear, then one of them yelled "There they are!" So they stopped the horses and let the last four people on. We could finally begin.
The hayride begins around the Settlement area, where you pick up the storyteller in a particularly dark area. There seemed to be two of them last night, alternating every other wagon. They tell the scary story as you eventually head offroad into the trees. Ichabod Crane comes alongside, talks to you, then follows a while before taking a different fork in the road. Then you go along the waterfront. That was really beautiful, and had fantastic views across the water of MK. People taking the hayride a bit later would get a glimpse of Hallowishes, which would be beautiful at that angle but would probably distract from the story. As you go along, you eventually see signs that Ichabod is gone (his hat, the bridle of his horse), and then you see the horseman across the water. He rushes at the cart, but stops at a safe distance due to being unable to cross a bridge. (The small kids on the wagon who had been barely holding it together pretty much lost it at this point.) The wagon stops, so the storyteller "can make sure you are all right", and then the headless horseman comes rushing at you from behind. I think the people in the back of the wagon could probably have touched the horse. It seemed like the horse's head was actually over the rear of the wagon. (The kids were screaming now.) I felt bad for the horse and horseman, because they were getting camera flashes from only a few feet directly in front of them. they took a couple rushes at the wagon, then fell behind as the wagon "outran" them. The storyteller wrapped the story and was dropped off just before re-entering the settlement. The wagon returned to where it began, and we were off about 20-25 minutes after we started.
I really expected not to enjoy the haunted hayride and was pleasantly surprised. I wouldn't necessarily do it over and over again, but it's a fun experience. We timed our hayride so we could walk over to the beach afterward and see the 9:30 Hallowishes across the water as well as the Electrical Water Pageant right afterward at 9:45. For some reason, the water pageant had the audio shut off. We had heard it when it was near the Contemporary earlier, but I'm guessing they shut it off so it doesn't interfere with the Hallowishes music, and it was not turned back on for the show at Fort Wilderness. It made for a great night, and I would highly recommend doing something similar as long as you don't have small children (it really IS scary for them) and you aren't with a group of 14 people who can't get everyone to events on time.