Free Entry to The Australian Museum (Sydney) on Your Birthday in 2017 [Registration Required]

I got this in an email from the Australian Museum:

"To celebrate our 190th, we’re inviting everyone to spend their birthday with us for FREE.

HOW TO REGISTER FOR YOUR FREE ENTRY VOUCHER
STEP ONE Enter your contact details
STEP TWO Select the ‘register’ button when the form is complete
STEP THREE Print the voucher sent to your email address
STEP FOUR Produce voucher and photo ID (only Birth certificate, State issued proof of age card, Drivers license, or Passport will be accepted) at the Australian Museum Admission Desk (Crystal Hall) on your birthday

If your birthday falls on December 25, you are entitled to claim free entry on any other day in the month of December 2017.

Don’t forget that kids under 16 receive free general admission into the Australian Museum."