I'm not going to belabor myself posting a lengthy opening night TR since I'm sure TPR will do an even better job, but I can
speak from my own experience.
It was our first Orlando HHN and we had a great time! Did not splurge for a Fast Pass so we accepted that we'd be waiting a while for everything and not get much done. Met a cool couple during early entry and ended up having a blast together just goofing off during our waits. Yes, we were those
people last night.
Ended up getting two rides in and 4 (1/2, more on that later) mazes, plus plenty of beer runs!
Was definitely glad that Orlando is not a dry event, like Hollywood is. Maze lines topped out around an 60-80 minutes for everything but Stranger Things. Stranger Things was 2+ hours the whole night.
So the one bittersweet thing that happened (which maybe you've heard about if you look at their socials):
We saved Stranger Things for last partially because we like saving the best for last and partially because it was a 2+ hour wait all night. Got in line for it 30 minutes to close, and they still were letting people get in line up until close. At around 1:30 (after we waited an hour, but others had waited much longer) we start to see them sending everyone home. There were droves of people all confused and frustrated being told that Stranger Things was closed. Basically, we heard the employees were under a certain contract but that per their contract they didn't have to stay past a certain time (which seems kinda weird and confusing, but whatever). So, since employees were leaving they could not keep Stranger Things open. The line to Guest Services was ridiculous. For the most part people were disgruntled and confused, but not belligerent. They ended up giving us signed business cards stating we could have a comp HHN ticket for any night as well as a Stranger Things fast pass.
I came all the way from Ohio to visit friends and go to this, so I'm definitely very thankful they gave us this comp. I'm lucky that we have time in the schedule to go again, so it will work out pretty well because we can hit the mazes we missed, including Stranger Things.
I'm still very confused why this happened. My experience with theme parks is either A. as long as you get in line before close, they let you do the ride/experience (shout-out to Disney's Flight of Passage crew!) or B. they anticipate the length of wait time and close it off correspondingly before closing, which is frustrating if you thought that A. was going to happen, but at least you can go do something else until park closing. I definitely don't think the park expected this to happen.
So now, we'll go again either tonight or Sunday and make sure to do Stranger Things early in the night. Those of you planning to go in the near future (esp if you don't get a fast pass): I'd recommend doing Stranger Things early or at least ask staff if they are going to close off the line early. I'm sure the park is going to make sure this is NOT going to happen again.
TL;DR : Unexpected things happen in this hobby, but drink plenty of beer and take a chill pill if they don't work in your favor.