I'm booked on the 2022 WBPC and off the top of my head I can't think of the ports. It's more about cruising the canal for me, and the nice long cruise. Maybe I'm in the minority, but I'm ok with whatever modifications they'll need to make at that time.
The Wonder might stay on the West Coast at the end of the 2022 season (and going forward), but I don't think they'll keep her over here at the end of the 2021 season. They'll want to keep the already booked EBPC fares, the already booked Galveston fares, and they'll definitely want to keep those 2022 WBPC fares. At the end of the 2021 Baja sailings they will be fully crewed up and would have to come up with new, last minute West Coast itineraries and give out 125% FCCs if they cancel. If it came to it, I think they'd cancel just the EBPC and sail through empty in order to go get the money that they've got in the Merrytime Caribbean, winter Galveston cruises, and the WBPC coming back over in the Spring.