Once I was at the dinner table talking, I'd ask them what their goals are.

I think even half the rent for those days would be too much, especially if this is a higher priced rental.I'd roughly base it on how long it is out for, how many people are living there, and what would it cost for a cheap take-out or "pick up from the grocery/warehouse store" dinner 3-4 times/week. 

No food delivery, just driving (expect when Covid first hit and of course everyone was ordering breakfast, lunch, dinner, and all the snacks in between!) 

Want to eat my chicken fried steak dinner.  

Our goal is every time we go out and eat is to pick a table at random and buy their dinner as well.  

Thanksgiving dinner stuff if they have all these elements.

It wasn't dinner time or anything, and it's possible they were just hanging out there, but what's the best way to handle this?

I owe you dinner Minh!

I bought him dinner for his help, and his one time login gives me expireds every day now.

I am at dinner with @Dev Horn on this one...