My MIL, of whom I'm very fond and who is generally a nice woman, is something of a princess. She was a spoiled child and my FIL has continued to indulge this throughout her adult life.
Last weekend we went to a family wedding. On arrival at the reception venue (lovely village hall), MIL immediately examined the place-name cards on the tables and then stood in a corner with her arms folded and a cats-bum expression due to the fact that she and FIL had been seated with people they don't know, and that the table was 'in the corner'. Rather than ignoring this spoilt behaviour, my FIL and DH immediately started rearranging place settings, which I though was exceptionally rude and ridiculous. I'm actually still quite fucked off with DH for indulging her in this way. She will never learn if they keep pandering to her.
Later, as we queued up to collect our food (hog roast), the cats-bum expression returned to MIL's face, and she made comments about it not being 'like a proper wedding' and 'well, it's basically a BBQ isn't it?'. Even though she eats pork, she couldn't countenance having any of the hog roast because she had seen it looking vaguely animal-shaped on the spit. There was plenty of other food besides the pork. Later, when someone asked if she'd enjoyed her meal, she pouted and complained that she'd only had some quiche and salads and potatoes and bread rolls.
Errrr.....well, that's a meal isn't it? The wingeing really got on my tits.
At Christmas, if you decide to be imaginative and buy her something that's not on her list, she pulls a face and then asks if you've still got the receipt. We just stick to the list these days.
She is very nice in lots of other ways though. Just a bit spoilt and has certain expectations.