Hide full events

If you’re using EventsManager with this, you can use conditional placeholders

http://wp-events-plugin.com/documentation/conditional-placeholders/

Events > Settings > General > Full Calendar Options > Event Title Format

Add something similar to this

{has_spaces}#_EVENTNAME{/has_spaces}{no_bookings}#_EVENTNAME{/no_bookings}

This will show events with bookings enabled that has spaces, and show events with bookings disabled, and hide everything else.