Where have you traveled on dcl? How are the ports and excursions? Thanks!
We did a 7 night Western Carribbean our of Port Canaveral on the Fantasy last July. It went to Grand Caymen, Jamaica, Cozumel, and Castaway Cay (Disney's private island). We did snorkeling in Grand Caymen and Cozumel. DS had snorkeled in Hawaii and loved it, so we knew it would be ok. Cozumel also had an on-road dune buggy part. I would skip that. It was windy, and our car had bad brakes. DH, who does amateur autoracing in an old car, ended up rear-ending a pickup in Cozumel traffic. It was a little scary, but we were all ok.
In Jamaica, we did the Green Grotto cave tour. Next time, I would either do Dunn's River Falls, which DH and I have done before, or stay on ship. We did a glass bottom boat thing in Castaway Cay, but I would just rent snorkel gear and chill on the beach.
The ports and excursions felt about the same as RCCL. However, I liked how on Fantasy, we waited in a theater and all left as a group, which is really good in Grand Caymen where you tender, take a smaller boat to the port. On RCCL, we always had to meet at the dock, which felt a little hectic and stressful.
EDIT: We liked Castaway Cay better than the RCCL private islands, Labadee and Coco Cay. Castaway has better facilities and does not require tendering.