Indiana at least until very recently had much more onerous regulations around food in bars(namely there must be a sandwich, a soup, coffee, and milk available). Here's an example compliance menu [1]
A local brewery complied with this by having a sign that said they would serve pizza, but it was something like from Dominoes and would cost 150$ if you ordered it.
In Louisiana, I believe breweries have the opposite problem: the majority of their revenue must be from beer, so if they sell too much food they're in trouble. I think some get around this with pop-up restaurants, maybe paying a fixed fee to be there.
Another weird rule is that Louisiana bars cannot allow children, even with parents, but breweries can. So breweries are often full of children. One in New Orleans has a bounce house on weekends.
Breweries in Montana are full of children. Play areas with toys are common and some places even go so far as to make a beer-free beverage like root beer or kombucha.
EDIT: Included details of the regulations.
[1]: https://www.kegworks.com/wp/wp-content/uploads/2014/09/Scree...