Well point 1 has to be - don't those old folks moan!
We went along and reduced the average passenger age by about 10 years, but that didn't bother us, we like old people.
This was our first cruise and we were looking forward to seeing a bit of the holy land over Christmas. Of course, this is 2011 and we were expecting to lose some ports due to the Arab spring. We didn't expect to lose the whole of northern Africa though, (how careless can you be!), but we did. Psrtially, due to weather and partially due to the locals, but did we worry? Nah! We still enjoyed it, we've grown to know that a loss is usually a gain, and we did have some extra bits thrown in, we gained an extra day in Malta and a brilliant firework party on New Years Eve.
I have to say the food was excellent, the service second to none and the cabins really nice. My only quibble is the beer prices which are a tad high, especially the bottled stuff, and as avid drinkers this made our expenses a bit higher than I would have liked. The trips were adequate, if a little dear. The evenings entertainment was superb, with the exception of the "star" soloists, who frankly couldn't sing their way out of a paper bag. The ship's theater company, of three chaps and two girls were great fun, and, although a bit lacking in personal ability, once in harmony mode, sang danced and acted beautifully.
Now the bad bits. Too many rumours - the boat had a leak, the hydraulic stabalisers were faulty and the sewerage systems were leaching into the cabins, (this latter we did smell). There were two murderers on board and a schitzophrenic wandering around with a meat cleaver, and a fight had broken out in the laundry which ended up with 2 couples being ejected from the boat.
Finally, apparently to fix all the faults, the ship had to cancel the last 10 days and the whole of 1 flight back the UK, were locked down in coaches whilst we were boringly driven round and around Naples for six hours. Thank you P&O, you blew a perfect holiday on the last day.