attendee attendee /əˈtɛnˈdiː/

noun

1. A person who is present and participates in a meeting  ( attendant , attendee , attender , meeter )
   a person who is present and participates in a meeting
    He was a regular attender at department meetings
   he was a regular attender at department meetings
    The gathering satisfied both organizers and attendees
   the gathering satisfied both organizers and attendees