When this father is conflicted, he asks Reddit:
My late wife and I invested in a small winter cabin years ago. I'm the owner now after her passing. My son (22) is getting married to his STBW in a month.
They have no money for a destination honeymoon, they were barely able to plan the wedding. He asked if they could spend their honeymoon in my winter cabin and I agreed but under the condition that they pay me.
He acted all shocked and tried to argue that it's his mom's cabin too but I pointed out how I'm the owner now and that I pay to keep it maintained. He got upset and accused me of being materialistic and selfish after I'd already been unhelpful with the wedding.
I told him I did the same thing with his aunt and it wasn't personal. He left with his fiancee and told the family about it.