UUHH as random as it gets, also sorry to Rosario for not coming up with anything for you,,, not sure what you're more in the mood for yourself rn but I'm a bit genshin brained so that's what I got ideas for!! so uhhh
not sure if it was ever said anywhere, has Arroux ever seen an opera? is this something he's interested in?
Rhein's favorite hiking spots in Mondstadt?
also, are they interested in seeing Inazuma's various different islands, even if somewhat hazardous?
any friends/acquaintances they've made in Inazuma besides their sweetheart? :)
Atoyac's got to have done some painting on cliffsides before, right?
ohh has Arroux gotten the privilege of trying out Navia's baking yet? would they like to join her and Una some time? XD
Kaveri's opinions on Cyno's jokes?
that's all I got atm! hopefully these were fun to think about tho! :)
bless you for all of these you're the best ;w;
Arroux has probably seen an opera, but whether they liked it is totally dependent on what it happened to be about. knowing Fontaine, the odds are that it was glorifying the state, which they would not enjoy and probably leave a quarter of the way through if they could get away with doing so politely(ish). BUT if it were more of an "indie" production, and the subject was politically critical (maybe something like Les Miserables?) they would 1000% be here for it, in fact they probably did the backdrops for the production lol
Wolvendom is definitely Rhein's favorite hiking spot! they just love how wild and remote it is, and of course it's a great spot to collect Wolfhook berries :)
they would definitely enjoy exploring all over Inazuma! and equally they'd love experimenting to try to come up with various Electro-resistant potions (with varying success and no doubt some nasty shocks in the testing process)
Rhein is still kinda getting their footing in Inazuma. the closest thing they have to a friend is Itto, who definitely did the "Extrovert Adopts Introvert Whether Introvert Wills Or Not" thing, declaring that any friend of Thoma's is a friend of the Arataki Gang! Rhein appreciates this, but while they like and trust Itto, they're a bit slower to relax around someone and really consider that person a friend, and sometimes Itto can be A Bit Much for them in large doses haha
for sure, Atoyac LOVES painting both for ritual purposes and for fun! with the help of Kelesio they can manage to reach some pretty extreme places that others might not have been able to. probably unsurprisingly, most of their art depicts various Natlan fauna.
Arroux would LOVE to join Navia and Una in baking! i like to think that they're friends with Navia and therefore have indeed been treated to her various baked goods, and that they always save some to bring back to Wriothesley (who apparently made a deal with Navia's father to stay far away from her and holds himself to this)
to Alhaitham and Tighnari's unending dismay, Kaveri genuinely thinks Cyno is absolutely hilarious. they ALWAYS laugh at his jokes, and he's started timing said jokes to coincide with Kaveri taking a drink to make them choke (in good fun, ofc).