You say the fare went down? Is this the sale that ends today? I’d call Princess right now and check, as tomorrow may be too late. IDK
If you call tonight, see if PCL can refare this booking for you. The TA may be closed now? Or, if TA is open, call them now, don’t wait till tomorrow.
I’ve booked online and called my agent to pick it up.
Yes, you can see your booking and the cruise personalizer whether you book direct or a TA. Yes, you can bid also.