The opposite is also true - you can’t get them to give you NO milk.
Because I’m between jobs, I’ve been around to help my family a lot recently with a whole series of issues with my Grandmother having a fall and ending up in a hospital through a nursing home and a rehab center, back to her new apartment in an assisted living facility. In each of the three facilities where she was provided meals, they HAD to bring milk. More than once, I was helping her fill out her menus, and I would write on there, “Please do not bring milk. She will not drink it. Please bring regular sprite/7up/sierra mist.” We wanted her to have the calories - she needs them - but she hasn’t drunk milk since she was a kid. She’s not going to start at 86. It’s just a waste. And every day, I’d sweep up two or three little milk cartons from her nightstand.
I finally managed to be visiting at a time I could pounce on the nutritionist, and she told me that it was a state law to provide milk. There was a solid eye roll on her part - apparently she even has to provide it to people she knows are lactose-intolerant until she can get some particular waiver signed by one of the doctors, and she occasionally has patients who drink it anyway and have, um, reactions, because they’re too out of it to know better.
Then again, in a lot of these places, you can’t just let folks eat whatever they want. Eating nothing but cottage cheese, white bread, and bologna is part of how my grandmother ended up there in the first place.