From the ships point of view, Oceana and Sea Princess are identical ships, so the ony difference would be whether you prefer Princess or P&O and which gives you the best price.
We have cruised twice with Princess Cruises, the carribean in January 2005 on the Sea Princess. We thought it was a fab ship, the food fantastic and had no problem getting a sun bed on sea days. Most of the people were English and mostly older than us in their 60s 70s and every one dressed really nice in the evenings. This cruise was for my 50th birthday and we felt the night time entertainment was a bit boring and the bars too quiet with ballroom dancing or singers, so we tried the night club a couple of times but there was hardly any one in, most people must have gone to bed very early. We did make friends with others nearer our age and had a fantastic holiday. In June 2008 we did a med cruise on the new Emerald Princess a huge ship, holds about 3000 passengers and 1500 crew. This time it was mostly Americans,with younger passengers lots of families with teenagers but also older people. The ship was fantastic the food fab the entertainment much better but it was the Americans that didnt bother to dress properly at night , some turning up on formal nights with jeans t shirts trainers and hoodies ha ha, which made us feel over dressed it was only the Brittish that dressed up at night time so its the Americans that 'dumbed 'the ship down. We still had a fab cruise and would sail with Princess again.
We've been on Sea Princess.
We didn't like it!
There were always fights for the sunbeds and we felt that Princess had 'dumbed the ship down' for the almost entirely British passengers. We would not go on it again.
Hehe i find that amusing, our experiance and those of my circle of friends that cruise, was that most ships we've been are 'dumbed' down for the American market, you've peaked my curiosity, I cant wait to try a ship thats been 'dumbed' down for the Bristish market...
Best to try the emerald or ruby princess, the sea princess is getting a bit old now and not up to the standard of the newer ones.
I'VE SAILED TWICE ON EACH SHIP, AND THEY ARE IDENTICAL IN LAYOUT. tHE MAIN DIFFERENCES - foR ME - THE DRINKS ARE CHEAPER ON p AND o (cocktail of the day £2.50), ESPECIALLY NOW THE DOLLAR HAS GONE UP, THE FOOD IS BETTER ON sp, BUT THE DESSERTS ON o ARE FAR SUPERIOR. p AND o PROVIDE FREE SHUTTLE BUSES IN PORTS, WHICH sp CHARGE FOR AND CAN ADD UP IF THERE ARE A FEW OF YOU (Mind you, you may not need the buses in the Caribbean!). SP generally has more Americans (I've not been to the Caribbean, but I imagine there will be quite a few Americans on that one), so the evenings are slightly less formal and you get better steaks in the main restaurant, and really interesting soups. Apart from that, the cabins are the same, as is the entertainment, art auctions etc
Hope that helps.
Having been to the Far East with Princess I would definately recommend Oceania, we had nothing but bad things happen on the Princess Line, and the food was absolutely awful. We will certainly never use Princess again.
Having sailed on the sea princes this may, I did enjopy the cruise but had we not been in a suite with good deck area we would have struggled to get a sun bed on sea days. They are all very close together, but the ship is quite good. dont know about the Oceana. The food was just Ok. Have cruised a great deal and Celebrity Food is better.