Hey Bob,
There should be no difference in how Filter Bar works based on whether or not Community Events is activated on your site. Also, events that are created by site admins in wp-admin and events that are submitted through Community Events are all “filterable” in the exact same ways; they work exactly the same with Filter Bar.
Does this information address your questions? If not, let me know what other specific things I can try to help clarify.
Also–apologies for the delayed response on this!
Sincerely,
George