Here's my experience with AK DAH tonight. (2/26/2019)
We got to the park tonight around 6:45PM for DAH. We did HS earlier today and then took a break to hot tub and do some laundry in the afternoon before DAH at AK. It wasn't that busy due to the weather. It had been raining since about 4:30. We grabbed an Everest FP earlier in the day so we went and rode that. It was basically a walk on so we rode it a second time. Grabbed a pretzel and went to ride Dinosaur. Got off Dinosaur around 7:45 or so, and went to ride it again but they shut it down 15 minutes early for some reason. There were some folks trying to get on the ride and they couldn't. I'm not sure if they regularly shut this ride down early, but it was surprising, normally in my experience things stay open until the park closes. I don't know if it reopened for DAH or not.
I haven't rode Primeval Whirl in about 3 years, and that's about how long it took me to forget that I hate that ride. I reset that timer tonight, man I don't like that ride. Rode that a little before 8, then sat at a table with an umbrella on it until 8:30.
Grabbed popcorn and a soda at 8:30 and started walking to Pandora. The night started off pretty well actually. Hit the entrance to FOP at 8:45 on the dot. Walked off the ride at 9:15. Almost no wait at the loading zone where you get assigned to the preshow room. I do not know for certain, but I only observed them loading 1 of the 4 theaters. I do not know how many were online tonight. There was a hiccup in the preshow room, where they repeat the decontamination procedure when they need more time up ahead, and we sat in the ride vehicles for 5 or 6 minutes between being secured, and then the ride starting. That was really odd, usually it starts pretty quickly. Something was clearly up tonight.
We got back in line for FOP right after the first ride, so say about 9:20, and the line was all the way down the ramp to right when you walk inside the ride building. We wait about 15 minutes and the line doesn't move at all. Zero movement. A gentleman we rode FOP with earlier bailed on the line, and we bailed as well. While we were walking back out of the queue we overheard people saying the CM's told them it was a 90 minute wait, and they were upset at paying 125 dollars to stand in line for an hour an a half. We went and walked onto Na'vi and rode that instead. At that point we left Pandora and grabbed a box of popcorn and another soda by Island Mercantile and we discussed if we wanted to go wait in line for an hour to ride FOP again, or if we wanted to bail and try to grab a late dinner at Disney Springs instead. We chose to bail, and hit the bus stop at 10PM, and managed to get to Chicken Guy around 10:50 or so. it took a while for a bus to show up, but we had it all to ourselves.
A few things to mention
We were just here in October for 8 nights with the kids, so this is a low key adults only trip my wife and I are on for our 10th anniversary with some friends. There's not a lot of pressure to see and do everything as we just did it all a few months ago. I will say this influenced our decision to leave early. We have 2 more FP+ for FOP this trip, so we'll get to ride at least 3 times total.
We were 110% prepared for the rain, and expected it. It didn't have anything to do with our decision to leave early.
We expected a mad FOP crush at the beginning of the night. That ride is the entire reason folks are coughing up the 125 (or 95) bucks for the ticket. Everyone is going to go get in line to ride FOP first thing. To have them reduce the ride capacity and create an artificial wait leaves a really bad taste in my mouth that no amount of "complimentary" Mickey Bars will remove. The FOP ride takes about 8 minutes or so counting load in/out time. 1 theater seats 48 people at once. Best case you're moving about 350 people an hour through that ride if they're only running 1 theater. Maybe 400 an hour if everything runs super smooth, which it wasn't tonight. DAH is promoted as a way to experience attractions with little to no wait, but then people were waiting anywhere from 45 to 90 minutes. Not what folks expected I bet.
Overall I haven't been happy with the extra hard ticket events at WDW lately. Didn't care for
MNSSHP, or how it affected the MK operating hours 4 nights a week during our last trip, and didn't find the DAH at AK worth it either.
We also have the DAH event at MK this Thursday, hopefully that event is better for us.