I managed to dig up some data about the Trainer's stats for Festival Plaza, Hall of Fame and the like.
They are in the following addresses in HxD
1D28: Starter Pokemon
Rowlet: 00
Litten: 01
Popplio: 02
1254: Trainer skin color (use the corresponding values for your player gender)
Male 1 (Pale): 00
Male 2 (Default): 08
Male 3 (Tan): 10
Male 4 (Dark): 18
Female 1 (Pale): 04
Female 2 (Default): 0C
Female 3 (Tan): 14
Female 4 (Dark): 1C
127A: Battle
Sorry about the late reply, I was and am still busy with last minute Christmas shopping with a friend and other errands.
I've updated the (USUM) dex with them; I'll add Shiny Celebi next month (you can also just check them yourself in PKHeX).
Also forgot about this, here are your longest daily Battle Tree streaks:
SM = 0x6B352
USUM = 0x6B952
You can set the byte to 0xC8 (200) to get all prizes when you walk up to the receptionist.
And in case I'm not h