I don't know if you're interested, but over on my ao3 account, I have a fic where the PJO characters get kind of internet famous?
If you want to read it, it's there -- I might bring it over here, but since there's supposed to be a separate one-shot to which they're going to be reacting to I'm not sure how I want to do that...
The rundown is that they have a group chat -- yes it's a chatfic -- and they get into a whole lot of chaos. The third chapter they watch a BuzzFeed Unsolved video on Percy (and his criminal buddies), but that's the separate fic... so *shrug*.
You can read my fics as a guest on ao3, I'm called the exact same. I'm just not sure whether or not to post everything on both accounts.
I see ao3 as somewhere where I can find fics between the 'canon' characters and wattpad as the place where i can find (beautiful) fics between original characters and canon characters.
I myself try to post both on both because I dont want someone who prefers ao3 to not be able to read my fics (or the other way around), but they look different.
My books CHRYSOS, VINO (havent begun on those yet) are ones with OCs (oc x percy and oc x jason) are ones that will hopefully look very cool and aesthetic on wattpad, but on ao3 they'd just look bland.
My RTB book of PJatO looks better (imo) on ao3 BECAUSE it is very 'bland'.
(TL;DR: for me wattpad and ao3 books have different vibes, but i find it difficult to decide between aesthetics (and personal preferences) and comfort (? basically everyone being able to read everything).
If you have any tips, please help