We've done 22 cruises...21 on DCL and one on Norwegian to Alaska the year before DCL announced cruises to Alaska. We knew it was going to be different from our DCL cruises and we thought we were prepared for that with realistic expectations. It was also our only cruise ever to a cool-weather destination, so that would be different, too. If we hadn't cruised DCL first we wouldn't have had much to complain about. Here's are some differences we noticed.
1. The standard NCL balcony cabins comparable to our verandah stateroom on DCL were arranged so the extra bed and bunk that came out of the ceiling went across the sliding glass doors on to the balcony, effectively blocking them. Unlike on DCL where the bunks are along the long walls, these obstructed our ability to go in and out of the balcony doors (and by obstructed, I mean we had to climb over the bottom bunk and duck our head under the top one whenever the bunk was down). And since both our kids were teens on this trip, they stayed out late and slept in late and so the bunks were hardly ever up and out of the way. I could have known this if I'd thought to look closer at the Norwegian Pearl stateroom floor plan but I was just so used to DCL I didn't even think this is what they would do with the room layout for four people. So if you've got kids along, check the floorplan of your stateroom. It was substantially smaller than the DCL comparative stateroom. If we'd wanted something more like the space and location of bunks in a DCL stateroom, we'd have had to gone up a couple categories into a suite.
2. Due to the colder, sometimes wet, most of the time windy weather, people who didn't have balcony cabins would camp out all day in the food court area so they had windows but were still indoors. This meant if you wanted to get a meal from the food court and eat your meal sitting down, there likely wouldn't be a table. This was apparently allowed by Norwegian, as we never saw any groups that had been at dining tables literally all day with games and books and blankets chased off even though there weren't places for people carrying trays of food to sit down. Not sure what to do about that...we were lucky enough to have a balcony cabin so we'd just wrap up our stuff as best we could and carry it back to our room to eat. I don't know how DCL manages this on Wonder as the additional viewing area they added during its pre-Alaska dry dock isn't big enough to hold all the people who want to look out the windows but stay warm and dry.
3. Glacier Bay. We really wanted to see this as it won't be there forever. DCL still doesn't go there. Wouldn't have missed that day for the world.
4. Although we were glad for the anytime dining option because there were so many things floating by our stateroom balcony we didn't dare miss a lot of it by eating long meals indoors, we did really miss the interaction with our dining room servers. We cruised at the end of June, and it stayed light until nearly 11 pm so it wasn't even as if we could just wait until dark to eat so as to avoid not missing any of the scenery. So the evening meal ceased to be a social event and became more of just something to stop you from being hungry!
5. Our kids grew up in DCL clubs from Oceaneer's Club to Vibe, so I worried they would be unimpressed by Norwegian's teen club program. DS and DD are both very sociable, so they immediately found what we called a "pod" of other teenagers to hang out with. They LOVED being able to go to a late night sit down eatery with their pod, and there was lots of teens-only stuff for them to do during the day while we were hanging out on the balcony with the camera, like bowling and karaoke in the adult night clubs.
I think it is also easier to do a non-
Disney cruise if it isn't a destination where you'd miss something distinctively Disney, like
Castaway Cay, or even disembarking out of Port Canaveral. We're possibly going to join some friends on a Princess cruise out of California to Baja within the next year. We've done two Baja Disney Cruises out of Los Angeles and San Diego and there was next to nothing Disney about of either of those terminals because they are shared with other cruise lines so it was row after row of folding chairs in what looked mostly like a hangar with one or two banners hanging up. The Princess cruise has the identical itinerary as DCL but is over a thousand dollars less than our rate for a similar stateroom. If we do the Princess one, we'll have reasonable expectations that while it won't be Disney, we'll save some major dollars and still have a very enjoyable cruise.