having been born and raised on mars, and having served in the martian military for ten years, the first half of chiara's life was somewhat spartan. while she was lucky enough to be born into a family that was on the lower edges of upper class so she never really went without, life on mars came with the overwhelming pressure to put the good of everyone else and future generations over the personal wants and desires and luxuries. and while some of her peers were in the wealthy enough that they could do both tier of the upper crust, chiara's family was just barely on that cusp of rich that lended itself to 'luxury' but just a taste of it. just enough for her to have a certain bitterness that she never quite got over, a certain envy of those that could afford all the fine things in life and still be seen as doing their civic duty and not just come off as spoiled or wasteful, bc they could do both.
and the snobbery existed, as it tends to, especially among those that are first or second born generations of the wealthy and powerful - a lot of people her age were spoiled to the point of absurdity bc their parents worked their asses off for their money and wanted to make sure their kids had everything they wanted or needed, while the kids didn't have to really raise a finger for it, without any appreciation of the work that it took to get there.
so she holds a certain level of disdain for the elite, especially of those that are wealthy beyond imagining, where they have so much money that they could use a fraction of their wealth to help entire colonies or countries and not even miss that money in their lifetime. she has wealth, but it's at a level of personal comfort and luxury to whatever extent she might want and she's worked her ass off for it, in both fields that she works in.
some of this derision comes out in small ways in her restaurant where she creates these 'fancy' and 'elite' courses that the rich pay a fortune for that are just... foam, or reduction of some thing or another, and just so ridiculously wasteful and over priced but they literally eat it up bc it's 'only something they could afford'
that being said she does truly enjoy her work as the owner and head chef at her restaurant, but there is a certain degree of tongue in cheek and irritation that comes with dealing with the upper crust that sometimes just makes her want to toss someone out an airlock. that tongue in cheek can be seen even in the name, by the way - pozze d'acqua literally translating to 'water hole' ie, a watering hole.
allllll of that being said, she does very much have a hedonistic flair and she will absolutely pay top dollar for genuinely good luxury furniture, clothing, ingredients, spa treatments, medical care, skin and makeup and hair products etc. but you can also bet your ass she makes sure it's good quality and worth the money before she spends it. she also is an excellent tipper for good service, more so for great service, and even tips decently well on shitty service even if it annoys her bc everybody has a bad day now and then.