I just took the tour myself. I will put the details within a spoiler box in case someone is taking the tour and does not want to read the details about it yet.
We started at the Tower of Terror with a plaid Disney guide. It was still daylight, unfortunately. This tour REALLY needs to be given in the dark. With the park closing early, and the Halloween Treat party at DCA we had to start in the daylight. (It's too bad they couldn't incorporate that party a bit into this tour with their stories that were told to us.)
Outside of the TOT ride, our "ghost host" joined us. Our plaid guide gave us the really cool lanyards. They light up 3 different ways. There is a gold key that has "Disney's Happiest Haunts Tour" on one side and "Disney Relations" on the other with a D on it. Our plaid guide said goodbye and our Ghost Host began. We head over to Disneyland. Stopped on Main Street for stories, and then to the castle for more. From there, we walked through Fantasyland and walked up the stairs where the old skyway is. At this point we were excited that maybe we were walking all the way to see it upclose, but we didn't. We then walked behind Big Thunder Mountain where we heard more stories and then on to the ride. Then, we rode POTC. I thought it was strange, but they had us wait in the regular line. It went fast though. Because the boat was full, yes we got wet, but of course fun! From there, we ended up at the Haunted Mansion where we met up with our plaid guide and said goodbye to our ghost host. We rode the ride. Upon exiting, our guide told us goodbye, but wanted us to turn around and say goodbye to our ghost host. She was waving from above the pet cemetary with a light on her and in costume.
I had high hopes for this tour, but it didn't come through as much as I thought it would. I do think the Guides did a great job. We did not receive a picture from Tower of Terror. I was surprised they did not add it as a gift along with the lanyard. I think, too, it depends on the group. We had a few people bad mouthing every now and then. That's uncomfortable. I guess there is a bunch they can do to improve. Back to the note about it needing to be at night....It just has to be to take it in and enjoy it as it's meant to be.