yeah the law school isn't very cafeteria-y though I guess? I remember it was open to the public pre-pandemic and took cash/cc. IDK you can get into the law school student center without a swipe anymore though, I believe harvard policy is still affiliates only in the buildings, but if you're like a contractor/construction guy on campus for something and go to one of the cash places they have (something that isn't specifically a student/faculty dining hall) no one cares.