Hi Bmonet,welcome to CruiseReviews! Congratulations on your upcoming cruise, like Dwayne said, you're going to be addicted
Cruising solo, you don't have to worry about who wants to do what and when, you can do what you enjoy. I've met many fun people on excursions, as I know we share something in common. I love snorkeling, so do book snorkeling excursions. You'll also get to meet people on board.
I totally agree with Dwayne, just go with the flow and you'll have a marvelous time. There are great bands out by the pool and they have fun clubs on board, too. If we can help you with anything in particular, just let us know.
Have a marvelous time!