(Review requested)

If a business has closed, simply deleting the name tag will not convey this information to data consumers.

In this case, it will still appear on maps as a caravan site, but with its name missing.

One way to achieve this is to move the name to old_name and use a lifecycle prefix on the "main" tag. In this case, you could change tourism=caravan_site to disused:tourism=caravan_site

https://wiki.openstreetmap.org/wiki/Lifecycle_prefix

Also, your changeset comment is REPORTED CLOSED, but you haven't given a source. Where was the closure reported?