I did a hiiiiiighly irregular Game Plan after I arrived late on Thursday and managed to do all mazes except Pandora. I don't necessarily recommend it because it is a loooooot of walking, but if you find yourself in this situation, here it goes:
1) Make a beeline for Ghostbusters, then do FMTW and then Creepshow. In retrospect, I really should have done Us first, because it started out at 10 minutes due to the weird placement of the maze and ended up going to 2 hours+ for most of the night. Ghostbusters is surprisingly very slow-burn on Thursday, although it does end up reaching the heights of Us, as well as Poltergeist from last year, just later in the night.
Regardless, I was able to do GB in 20 minutes, FMTW in about 25-30-ish, and Creepshow in 65 (longest wait of the night)
2) Then we rushed back to the lower lot and actually skipped the two mazes there, Klownz and Stranger Things. Instead, we rushed to the upper lot and did the maze with the shortest wait-time: House of 1000 Corpses (which had depressingly low waits for the entire night). Right afterwards, we did Holidayz. In total, even though HOTC listed a 50 minute wait, it was really closer to like, 25 minutes, it was really fast. Holidayz's wait was advertised as 45 minutes, and that sounds about right.
3) By now, you can probably imagine we were exhausted, so of course we did the obvious thing and rushed down to the Lower Lot to do Klowns. The line was listed as 60 minutes, and we thought this was gonna be the end of the trip. Instead, it zipped by in maybe 30-35 minutes or so. Ditto Stranger Things, which by then (1:20 ish) had a 45 minute wait time listed but really was closer to 10 or 20 minutes.
4) Afterwards, we were completely tired out, drunk, a little irritable, so we did the logical thing and sprinted up the stairs from the lower lot to the Upper Lot to do Us at 1:42 AM. We arrived at around 1:52, comfortably within schedule to experience Us. Unfortunately, Pandora closed down the second we left, but ultimately, we got to do eight mazes that night as well as get our weekly workout and eat one of those disgusting-looking Slimer Dogs.
I don't really recommend this plan to anyone, but if you want our thinking, the fundamentals went: do the ones furthest from the gate first (so at least you don't have to walk all that way) then cherrypick the attractions with the lowest wait times. It usually ends up working out, and those estimated wait-times are usually lies.
Definitely there was quite a bit of conga-lining tonight as the night went on, which I have mixed feelings about. Of course I probably wouldn't have experienced all those mazes if that conga-lining hadn't been there, but again, kinda ruined some of the scares. Oh well, I'm still proud of myself for doing eight mazes when I only managed to do five last year.