My dad usually pays for four long weekends away every year. He spends thousands of pounds. He wouldn’t accept us paying towards it.
What annoys me is my brother in law plasters photos of the weekend and conveniently only includes photos of my sister (his wife) and their children in them. None have any of us even in the background or when we’re at the restaurant together etc. he even hid that one of these weekends was for my dads birthday, he made no mention of it or had my dad in any of the photos.
If you’re one of his colleagues or friends you would assume it’s him that’s treated his family to a trip away.