Some of these are awful.
One of the worst for me was camping with the in-laws.
They are retired and live in the country. We both work FT and live in the city. We left the city on a Friday night (after work) and drove through awful traffic out to the campsite. FIL complained we were 'late'. Campsite was about an hour from their house, through easy traffic. They had been there since mid afternoon, chilling on white wine.
We had to stop en route and buy groceries (because, you know, they are too busy relaxing to do that) which included a detailed list of food stuff such as lamb steaks. No steaks at the supermarket, only chops. Not good enough, according to FIL, recipe called for steaks. The menu for the whole weekend was super elaborate - soup to start - lamb steaks and gratin potato, dessert, wine, cheese etc etc. Breakfast was pancakes, bacon, all cooked on a camping stove. Yum, but so time consuming and we usually just have burgers or pasta, something easy!
MIL was ill and spent most of the weekend in the tent sleeping or being sick. FIL was obsessed with tidying the camp, spraying bug spray on his legs and generally getting on my nerves. Check out time was 3pm - and they stayed till the bitter end to get their money's worth.
Never again.