The institution where Regan receives treatment has glass offices in which you can see the patients and their counselors with the only privacy being offered is by audio. So that patients can feel more comfortable, all institutions are required to have a secure sense of confidentiality which means no glass rooms.
Lamont and Sharon visit the Georgetown house in the rain. The first shot clearly shows the sky to be completely overcast. Later, very bright overhead lights are reflected by the tops of both their umbrellas.