The database module provides 2 settings Available From and Available Until, which basically hide the activity from users if the date conditions aren't satisfied.
This seems to duplicate the functionality of the (site-optional) Availability-Date conditions.
Is there much objection to merging these 2 features so that the From - Until database setting is migrated to the core availability feature?
It has been pointed out that availability is a feature that can be turned off at the site level.
I propose to drop these 2 settings in favour of the Core Availability API. As part of the upgrade we could migrate the settings to the availability settings but it would require site admins to enable availability, but we should be able to highlight this requirement as part of the upgrade.
This would not be backported to previous versions.