I have some very wealthy friends, who are kind and generous. Quite often they will host parties, invite a group out for a meal, etc. i feel quite fortunate to be the beneficiary of their generosity, and they know I do not/will not ever take advantage.
On some levels though, it is very difficult to reciprocate their kindness and generosity. I live well, but quite simply. In order for me to reciprocate, it involves them 'coming down' to my level - i.e., have what they might consider an inferior bottle of wine (for example).
It is a real dilemma to find a birthday gift for them, for example. Last year, I found the wife a beautiful and quite special orchid. She received it graciously, but i could see (when I dropped it by their house) that she had several more extravagant ones sitting in various rooms. So, my 'special' gift was not special at all.
They are snobby - they just have expensive tastes (which they can afford) - but it makes it very hard for anyone else to give anything to them, or do anything for them.