I will be going on my 8th cruise as a single (now into my 50's), all with P&O. I have found that you can join in as much or as little as you want.
Single supplements can be high the later you book, the ideal best being to book when the brochures first come out, i.e. 12 to 24 months in advance, plus the choice of cabin grade availability tends to be greater.
However for this year, P&O have Arcadia and Aurora going to the canaries in November, and an inside cabin (for a 12 night cruise) should be got for about £1200 to £1300, if this sounds reasonable, get booked and enjoy.
My wife died 10 years ago when I was 48 and I've been on many cruises by myself since then and enjoyed every one. One thing I would strongly recommend is to go for fixed dining arrangements and ask for a large table (8-10 persons - just in case there is the odd boring person you want to avoid). This allows you get to know other passengers quite well and talk about what you did that day and plan to do the next. Previous cruisers can't wait to give you advice and will talk endlessly on the subject. Most evenings we used to go as a group either to a quiz night or a show and possibly a drink afterwards. Similarly if you find you are going on the same tour, more often than not they suggest meeting beforehand so you are on the same coach. Why? because if a couple have been together for many years it's great to talk to someone new! Alternatively if a couple plan to hire a taxi to go somewhere then a third person (i.e you) helps reduce the cost and 3 is a lot safer than 2 in some of the countries I have visited. If it's your first time then possibly P&O may be a good bet. Apart from there being mainly British passengers, which may make you feel more at home, a lot of their ships have dedicated cinemas which are great if you want some time on your own (or get away from someone!) They also have singles get togethers which are quite informal but once again give you the chance to meet other passengers. In fact, your main problem will be getting a decent discount for single cabin occupancy. The deals are there, so do it and have a great time. I've met some great people over the years and still keep in touch with some of them._.
Konwone need to feel alone on a cruise I find Fred Olsen is good for anyone over 40 and the smaller ships are very friendl.
It is the best possible holiday for singles. You will soon be integrated into the social life on board, make new friends and have a great time.
If only !!!!! No chance on both accounts I am afraid Fre.
The most important thing to do is to join the Roll Call for your cruise - this way you get 'chatting' with your fellow cruisers serveral months before you sail, and when you do finally meet it is like meeting old friends -so you never feel alone or lonely.