[Events 2.0] Decline Option On Registration or Landing Page

Has anyone found a good work around for adding a "cannot attend" button, link, etc. onto the event landing page? It seems like the "decline" option only exists on the original invitation email that gets sent out but there occasions where someone needs to be sent the landing page to register. Or if we'd like to publish the landing page URL, it would be nice to have that as an option. My current work around is adding a text line that reads "If you cannot attend, please email the event organizer by clicking here" and making the words "clicking here" a link that will generate an email to the event organizer.