If Princess offers it as a single itinerary and you book it this way, you will get 2 credits for sailing solo for the full sailing.
As above, if you book it as a single itinerary, you will get 2 credits for the entire sailing.
Princess uses elite status as their top tier and is granted after you’ve attained you 15th cruise credit. So yes, after you have completed you second leg of your B2B.
You won’t need to link your cruises, it will be automatic. They will show separately in your personalizer but as one on your app.
If you book this as 2 sailings, you cannot combine them to get the higher amount of stockholder credit. Applying for the credit is now done online through Stockperks.
There’s no real perks or monetary benefits to booking a B2B but they seem to be having a ‘in transit passenger’ meeting onboard to explain the processes that will take place.
For me, I would book it as two sailings. It gives you more flexibility and only $50 less in stockholders credits. Just my thoughts