You may want to post on the "singles" board as well and also the "meet on board":
If you are a beach person, Coco Cay is just the place, some decent snorkeling if you are into that and an all around great day at the beach. Its usually the highlight of my cruises, love going to nice beaches, enjoy. Here is also a link to some information for first time cruisers, should answer most of your questions.
Be sure to post back after the cruise and let us know how you like cruising??
Have a great time and I'm sure you will meet some nice single woman, good luck and happy cruising!