Will you share it?
I think your best bet for that might be one of the “ruler” games that pop up now and then. Although the ones where the mc is actually raised as a prince(ss) are are rare breed even among those.
The last two good ones to pop up (both on hiatus now, sadly) would be “Return to Zemia” and “New Atlantis”. Both are of the variety where the mc was born, but not raised, a prince(ss) though.
It’s also possible that if you can wait a few years @Havenstone 's XoR will veer in the direction where you can be a “noble” ruler, should your mc go for that. By all accounts the high nobility in the Hegemony is super duper posh and extremely decadent.
Or just get saddled with it. Darkner’s New Atlantis game especially fits this, my mc there wants nothing to do with it at all. Still the setting had promise with its, unique matriarchal culture that, for once, didn’t seem to be the mainstream media fantasy of a matriarchal culture, aka, we’re all super hot amazons just waiting for the right male hero. Still, for now it seems to be on hiatus.
Yep, even in a lot of stories where we do play a prince we often don’t get to really engage with or enjoy the posh aspects one would normally expect of the role.
Then we’ve all got to hope Fawkes will resume Seven Heirs soon, as the mc there is never anything else than a royal of a very prosperous kingdom who can basically be as posh as they like. 