We attended the 8/21 DHS AH as a party of 8. This was my first AH event and I was nervous after reading some of the DHS-specific reviews from earlier in the year that described lengthy wait times, but encouraged by the more recent reports here. Overall, we had a great time and would consider doing it again - but I'd prefer to try the MK AH first before repeating this one. We didn't go into Galaxy's Edge because we already had a LLSP booked for Rise for the following day and didn't want to risk being in line during the event if it went down.
DH, DD, and I arrived at the park around 8:45pm and checked in/received our wristbands as we entered the front gate. DD wanted Starbucks before it closed, so we went to the Trolley Car Cafe first and decided to walk slowly back to TSL in order to finish our drinks before getting on any rides. A lot of day-time park guests were busy watching Fantasmic and the Wonderful World of Animation, so we walked onto TSM at about 9:15 (3-minute wait). After a quick ice cream and popcorn stop in TSL, we walked leisurely to MMRR with our whole party and waited 14 minutes before boarding at 10:06. Then a few of us walked to RnRC (my DD's priority) and rode that once at 10:32pm (16 minute actual wait, 30 minutes posted) before grabbing another ice cream and heading back to TSM to meet as a whole party again. We waited 23 minutes there because the event was in full swing and they were running only one track (boarded at 11:15pm). The ride stopped several times while we were on it, which was a little frustrating - I know it happens, but it's a bummer to pay a premium to be stuck - especially when you can't even keep racking up points like you can if you get stuck on Buzz in MK.

After finally making it off of TSM and stopping by the restroom, we headed over to SDD - posted 40 minutes, but we waited 10 and boarded at 11:47pm. DD and I grabbed another ice cream and headed back to RnRC to finish out the night. We rode that four times between 12 and 12:30am (joined by some of our family for the last ride of the night), then grabbed another ice cream and several bottles of water on our way out (CMs were encouraging guests to take as much as they wanted). We did notice that the cart by RnRC only had water as we were leaving, and the cart in front of ToT/Fantasmic was running out of regular Coke during our final stop.
I kind of wish we had coordinated as a group in advance to move through the park in one direction rather than bouncing back and forth, but I'm still happy with what we got done and we had a fantastic time together.
We didn't seek out any character M&Gs but did see Stitch meeting in front of MMRR. I saw another poster report that Jiminy Cricket was meeting - I probably would have stopped if I had seen him.