Each leg your on board ship account is finalised, no big deal.....however...........every leg we were hugely disappointed to find that our movies on TV were repeated time and time again. So much for the passengers who had paid to do the 104 days, nothing much new was offered to us. The daily Princess Patter becomes very mundane, with no new activities, and many are un hosted as the small staff are stretched coping with 2,000 passengers.
Our Entertainment was very very lack lustre with Musicians,Singers, comedians, Magicians...giving us the same old lines, jokes, acts that we have seen over and over, on many nights passengers walked out of shows. Finally by New York arrived a new troup of young, energetic dancers who finally gave us some great Production Shows and terrific costumes, shame we didn't get the good shows from day one.
On the whole we had a wonderful trip, met lovely new friends, but we did make our own fun, during the day cruise staff were somewhat invisible, especially our Cruise Director.
Just ask questions of your travel agent, and another idea would be to choose a ship which offers Personal Choice Dining, as to be locked into the same dining time and restaurant and the same table of people for 104 nights is far too long, not satisfactory at all.
Hope this helps when making a choice of ships for a World cruise