You're right. I called Oceania and I am unable to upgrade my cabin. My TA is away for another week. She works independently and doesn't have another advisor covering. There is only one PH3 cabin available so I'm worried that it will get scooped up.
And yes, the upgrade is around $230 CAD/ $175 USD per night. We chose this cruise for the itinerary and having spent some time since looking at other ships, itineraries and sailing dates (already dreaming about our next voyage!), it seems to be an expensive one to begin with. We are excited to see what the onboard booking offers are. Friends of ours did that and said they got a good deal!