Do I get a Certificate of Attendance?

Yes, almost all of the umpiring events have certificates of attendance.  The certificate gets loaded to your Hockey Hub profile (you can use the Download Certificates menu option within your profile once you have logged in).  Please note that they will not be available immediately after your attendance on an event, and can take up to 4-5 days to appear as the attendance registers need to be checked, and certificates uploaded before you can view them.