I spoke upthread about taking screenshots. I figured I’d just post mine here for all you late sleepers.
As you open
MDE you will see this screen. Here, you just need to tap “Find Out More”. (And yes I put a big black oval over the picture because I am afraid of you people when it comes to possible spoilers):
You will then get to this screen and tap “Join Boarding Group”
Since I was not awake until after park opening you will see that the ride had already started running and they were currently boarding groups 7 -23. Above, you will also see the note that initial boarding groups are gone which is why this popped up as I hit “Join Boarding Group”:
Just hit “OK” to clear the message. After the message clears, this is the screen you will see whether you are joining an initial boarding group or a backup boarding group:
You will see that the MDE account owner is automatically selected. Also notice the very handy “Select All” button at the top. In my case, not everyone is riding so I need to unselect and select a few people.
Of course, since I’m just practicing and we’re not at DHS, the following screen pops up after I hit “Join a Boarding Group”:
Unfortunately, from reports we’ve gotten, this screen may appear even if you are in the park. In that case, tap “Remove Guest From Party” and move forward with obtaining a boarding group for the guests that are recognized.
I definitely recommend practicing at home before the big day as it’s super helpful to work your way through the actual process.