basor, AMHuntFerry, EJL2023 and 1985rz1:
A message of gratitude to you all, and to our diligent TA, who refused to accept Oceania's directive that we were not eligible for the 25% discount on shorex without paying the premium to switch to Simply More. We have just received, via our TA, an apology from O, and the advice that $AUD785.00 will be deducted from our final payment, due in a few weeks, for our Vista cruise next April. This amount represents the discount now applied. O prefers to simply deduct the amount, rather than refunding our credit card. We are perfectly happy with that arrangement. You were all correct, and I salute you. When we booked, this cruise was advertised as a special offering, where we could choose either OBC, House Select package, or up to $1500 discount on shorex. We chose the drinks package, which we have now upgraded to the Premium package. I had assumed that the usual discount (YW) for a minimum number of shore excursions, which we had always received when enjoying many O cruises in the past, didn't apply in this case. The O rep our TA spoke to the other day was of the opinion that to receive the discount, we needed to pay approx. $900 each and switch to SM. Our TA actually included us in a 3-way call for this decision. After carefully scanning the T&C, she persisted, and Voila!
On another note, a major glitch with O's website, when purchasing shorex, is one mentioned by at least one other CC contributor. I had originally purchased 9 tours, but then the following day purchased 1 more. The minimum on this 20-day cruise to trigger the 25% discount is 10. I suspect if I'd purchased the 10 at once, all the doubt may have been avoided, and the discount applied at the end of the purchase. In my case, and in others I've read about on CC, 9 plus 1 did not make 10. Anyway, all is now well, justice has been administered, and I'm very grateful for all your correct advice and assistance.