Try the P&O web site click on before you sail then click cruise personalizer you need the name of the person who booked it and the P&O booking ref, number you can do all you form filling ect,on that,it has started to give the dress codes for that cruise, not sure about booking trips?the trips available can be seen by going to your ships web section click cruises find the one you have booked then click excursions it has not as yet given prices,but you can wait for the brochure as previously sugested?
You can pre-book excursions before you go, P & O will send you a brochure detailing the choices.I would only book if you are really keen on them, and only for a few, as you can book when on board, and you have sampled them.You can also pre-book spa treatments, and they will send details of them, too. If you don't, the best time to book them is as soon as you are on board if you have a particular day/treatment in mind. Otherwise, you can also book when on board at any other time. There are lots of "best seats", none bookable, for the shows (Except I think there are now "Boxes" available on Ventura)Dont' have to turn up "really early", we've always found 10-15 minutes before the show is adequate. Enjoy.