Add extra test in `send_session_reminder_message`
Add extra test in `send_session_reminder_message`

trying to not send to folks who have signed up to play

10000-Lakes-Gaming/registration,Acerak2/registration,Acerak2/registration,10000-Lakes-Gaming/registration,10000-Lakes-Gaming/registration,10000-Lakes-Gaming/registration,Acerak2/registration,Acerak2/registration