Because, that's entirely the only conclusion we can come to.
We've got marketing teams on the gold coast that schedule engagement posts for attractions that aren't even open at the time they're posted due to maintenance - and you think they're capable of collating a mailing list from multiple membership, subscriber and annual pass systems?
I would not be surprised in the slightest if they maintained their master list in Excel, and relied on manually updating it either.
For the record, my whole family has had Dreamworld passes, and I never, ever, received any of their special offers or passholder emails.
I didn't bother to follow it up with them because Parkz. But I shouldn't have to - they capture that info at time of signup - it shouldn't need to be.
TL:DR - it's not always the recipients' fault. Thankyou for calling DaptoTechSupport.