I'm sorry to disagree, but I can't imagine a good enough reason to open theaters until well after the peak of this. They're one of the most likely venues to spread it, with close quarters for hundreds of people and air circulation that definitely moves what comes out of one person's mouth to many others.
Libraries, I can kind of see a path forward, but operating by appointment. Not that Libraries these days are EVER crowded, but just as a precaution. Also, it's another group of workers we'd be asking to risk their lives working on site, so there's that. I will say that I'm quite befuddled by the fact that HOOPLA, the online service used by my, and countless other libraries hasn't increased their monthly limit of 10 items in total in response to this. It would be SUCH an easy and sensible thing to do and yet they haven't. I know there are backing licence agreements with publishers and for videos with studios which set the number of available copies, and that hasn't changed, but it would have certainly made sense for some calls to happen, for those licences to be temporarily expanded as a charitable gesture by the content providers, and the overall limit pushed up for a few months. It would be much better than asking librarians to go to work. I mean if Andrew Lloyd Weber can put up Joseph and The Amazing Technicolor Dreamcoat, and some of his other stuff, up for free for a while, why can't other content owners step up too?