Hi there John
I have been on a couple cruises so far . and have 2 more lined up for the future so far.
I wish there was a better Meet & Greet set up for us single cruisers.
The ship seems to be loaded with couples and families. And I find it hard to meet people, because everyone seems to already be with other people. If you know what I mean...
its an Icky feeling when you are sitting there watching everyone else dance ..and you are just sitting there watching ...
I have never gone on a singles cruise yet
perhaps I would have better luck if I did. 
I have gone one time with my kids , been seated for dinner with two other families...but I was the single one
and the second time , I went with my sister and some coworkers... but again ... I was the single one there too 
My next cruise I am going with my daughter and a few coworkers , but they are all married . So who knows how that will turn out for me again
I wish I had some single friends to hang out with
It is a bummer sometimes