Your mobile number helps us to reach you in an emergency during the event, e.g.if you are alone with your group at a conference or similar. If you don't have acell phone, you can leave the field blank.
For various reasons, e.g. because we have to keep gender segregation during the nightfor legal reasons, we need to know if you are a boy or a girl. With some names this isnot always immediately recognizable, so we ask you to indicate it here.