Hi there, you may want to check out P&O Cruises | Cruise Community
there are multiple threads on their Forum pages regarding the 7-ship Grand Event, including ship specific entries.
One example is P&O Cruises | Topic
We are on Oriana, and looking forward to what should be an 'interesting' day.
Last: P&O Oceana December 2016
Next: NCL Jade August 2017
Then: P&O Ventura December 2017
Golden, Grand(2), Caribbean, Royal, Sea(4+1 aborted)
Adonia(4+2), Arcadia, Artemis(2), Aurora(5), Azura(2), Britannia, Oceana(4), Oriana(12), Ventura(2), Victoria(5)
QM2(2), QE2(9), QV(7), QE, Caronia(2),
Oceania Nautica, Minerva, Minerva II, Fred.Olsen(8), NCL Jade, =X= Eclipse, HAL Ryndam, Aza.Journey, CMV Magellan