I'm not so sure what the limitation you mean, can you please explain more clearly about these? AFAIK, Premium license is capacity based. You can't publish your content into premium capacity if premium capacity is full.
BTW, you can also take a look at official documents:
I mean that I don't want certain users to have access to the reports - we want our whole organization to have access however we do not want our contractors to have access. can I use an exception for those specific people?