I personally like to stock up on the $11 vouchers and use them as I need.
But from June 27 Optus is switching to the same way Telstra does village movie tickets.
From June 27th you'll be able to:
Purchase discounted movie tickets to HOYTS cinemas directly through HOYTS 'Book a Session' on optusperks.com.au
Purchase discounted movie vouchers to independent cinemas like Reading and Dendy as you do currently
Bit annoying to be honest.
Is there a difference?
Instead of buying a voucher and getting a code to type in to the Hoyts site, it just takes you directly to the Hoyts site and lets you purchase the discounted price directly.