Yes, Trieste is being used as a replacement for Venice and was cancelled (assume it is because four other cruise ships in the same day).
I spoke to my TA today who said they had P&O ‘specialists’ in to help with the number of P&O queries.
our only option apparently is to cancel cruise or move. This is not possible. We paid for our original cruise, in full, March ‘20. We left our money with P&O in good faith during very difficult times for everyone.
We booked the two weeks off nearly a year ago with our respective employers and for the three of us who are in full time employment to try and get a different two weeks together during the Summer months is practically impossible (cover and other colleagues holidays).
Apparently other ports have been cancelled on upcoming Arcadia cruises too and the TA is trying to sort those out too.