How will a Skywards Saver reward benefit me?

Skywards Saver Rewards offer exceptional value when travelling during lower-demand periods or when you are willing to choose an alternative flight to reach your destination. Skywards Saver Rewards are offered in all classes of travel, on a return-only basis. 

What are the differences between a Skywards Saver flight reward and a Skywards Flex flight reward?

Do I earn the same Miles Accelerator bonus if I have purchased a Skywards Flex or Skywards Saver fare?

Can I combine Saver rewards and Flex rewards?