According to John Heald's blog, passengers do not muster on the outside deck any longer, each passenger will be assigned to a lounge/common area on the ship for the drill and you can leave your life jackets in the stateroom. In the case of a real emergency, a Carnival employee will assist and guide all guests to a lifeboat.
Sounds just like the way it's done on the big Princess ships. (Boy, do I prefer that, to the way Carnival does it!) Much easier, and you can actually hear what's said, and all the instructions in case of a real emergency.
Glad to hear that bit of info. We were on RCCL's Freedom a couple of weeks ago and our Seapass card had our muster station number and we didn't have to lug the life jackets to and fro. Much better.
Heading out on the Dream in Feb.--- That'll be a good break from the winter weather !!