Honestly one of the best parts of this for me- I'm arriving on a Wednesday late afternoon and for the price of a regular park ticket, I get several hours with guaranteed low crowds.
It's PERFECT for an arrival day. That hasn't lined up for us yet, but I always hope for it.
We did the monday MK AH and it was great. Not maneuvering around crowds is a gift even before you get to how easily it is to ride rides.
We arrived at MK at 8:20pm via boat from WL and stood in the town square to watch the fireworks. We did a little shopping in the Emporium (well, our adult kids did) and did the following over the course of the night:
Between 8:45-10pm (regular park close):
POTC (5-10 min wait)
(skipped Splash because it was cold and decided to do it as last ride)
Shooting gallery (kids wanted to do it since they did it as little kids), no wait lol
(skipped HM because it looked like a longer line than we wanted)
IASM (5 min wait)
PP (5 min wait)
Park Close
SDMT (10-15 min wait)
Barnstormer x2 (no wait and didn't get out of ride between)
Ice Cream/Soda/Popcorn stop
Space Mountain x3 no wait (DH and I only did it once, my spine thanked me, lol)
People Mover no wait (DH and I while waiting for the "kids")
Buzz no wait
Photo Pass pics in front of castle with no other people in the pic
Watched Space X launch across the sky (lol)
HM no wait
Splash no wait
Exited park around 12:30am
For us, this was a great way to get MK rides in w/o having to sacrifice time in the other parks that have the majority of the rides that our kids hadn't ridden before. In MK, only SDMT is new from their last visits many years ago. So it's sentimental to them, but I wouldn't have wanted to skip anything we did in our other touring to accomplish that.