Anon users will not be able to see inside the real, restricted category. They will only see the category preview. Staff can see/access everything. Here’s a breakdown of a hypothetical category list:
Staff User (always sees both)
- Restricted Category
- Restricted Category Preview
- Public Category
Anon User (only ever sees the preview)
- Restricted Category Preview
- Public Category
Logged-in User with access to restricted category (preview not needed, so never shown)
- Restricted Category
- Public Category