Thank you! Honestly, I was originally doing this just because I could and it was funny, but honestly the story made me like her quite a bit, so I went all the way.
I've been sort of preparing for this event since the days of no content September, even if that's still a relatively lackluster group since I had no gold bonus Servants to my name and many of the silvers were mat-locked.
And with all the stocking-resultant EXP, it turned out to be pretty straightforward once I had the patience to not just take them immediately and shove them in people.
Time to see the people despairing that my friends request page is full and that I don't really take people on because I like having under 10 people so I can always get the ones I want.
I had to use a Command Seal (on Caesar), because I didn't relish trying to fight Waver with only an Assassin and I was too stubborn to use it earlier (when having Santa Alter still alive would have been much nicer).
So verdict is that I am not quite at the point where I could grind 50 AP even if I wanted to not be able to turn off my brain, but I'm reasonably close under the circumstances.