I can create events and add leads are participants.  Is there a way to mark a lead as having attended the event?  They are marked as having accepted but I can't see a way to denote whether they came to the event.

Is there a way to use Event Date that a lead is a participant in workflows?  The field is not listed in the picklist.

Is there a way to send an email to all leads that are part of an event at once?  I don't see that option.