I thought this would be about being s whole lot more wealthy, so I had questions ready a colleague of mine overheard from a seven year old.
"What is your estate called?"
"How many barrels of land does your family own?"
When it comes to a million euro house, I don't think you need to behave that differently from what's your norm. People from every walk of life can come into that kind of money, be it from inheritance, a good job, lucky investment or help from parents. Just pretend it's a house you can barely afford and ask questions as if you're considering buying it. Point out flaws. Or don't, you're allowed to reserve judgement.
Some moron in highschool...