Brian, there's no right or wrong with this issue.
As always, read movie scripts written by professional writers, see what they do, and emulate the ones you feel best reflect your style and…
Brian, there's no right or wrong with this issue. Some writers use scene headings all the time, and that's fine. My point is can be a cleaner read using shots and give the writer a more accurate accounting of the number of scenes they've actually written. But if a sublocation feels "so different" to you, use a scene heading and either add CONTINUOUS or no time stamp at all, which can suggest continuous time.
As always, read movie scripts written by professional writers, see what they do, and emulate the ones you feel best reflect your style and approach.