Looking to book US to AU for 2027, hoping for Polaris. I want to confirm, do all of the United cards currently get access to the cheaper award prices when they are available? 100K each way is very desirable so definitely willing to open a cc and hope for availability, but want to make sure I open at the right level.

I think in the meantime I will probably book PP, it seems like 70K for anyone is somewhat commonly available. If I am already booked in PP and Polaris opens at the cardmembers save pricing, will I be able to just change the flight and pay the 30K difference or would I need to cancel and rebook? There will be 2 of us, would we be better off on our own itineraries in case only one seat comes up at that price?

I there any way to filter/narrow the search to find the discounted business saver fares that are eligible for discounted pricing? Are any of the points monitoring subscription sites available/reliable for something like this?