Hi Ralph,
Welcome to LCT! Looking forward to your posts. We were on the Mariner in 2003 through the canacl (FLL to LAX). It's been one of our favorites.
And as you've been lurking, you know that we have lots of animal lovers here, so Duffy is welcome too!
As for being a single cruiser, you might want to get your feet wet on our MUSH cruise to Alaska. There'll be quite a few singles on that one, plus many of our smiling faces, so you will have a lot of friends on board!