We were on the Sun for the New Years cruise. It was our first cruise, but when we got back to Miami there were some people on the shuttle to car rental place who had just gotten off the Dawn and they thought the kinks weren't out of it yet as it is just a new ship. As for excursions, I did the horseback riding in Roatan and that was full when we got on the ship as someone wanted to sign up with me. I had signed up online, however there were to others available and did go on the one in Belize also. If you aren't to picky I think you could find something to do, I just would check into it as soon as you can. We signed up for snorkeling and scuba after we got on board. Also that particular cruise was full and I don't think other times of the year are as full. If you decide on the Sun and want any more details, let me know and I will try and offer my opinion. Bon voyage!!!!!