We had cruise
DCL 4 times and also wanted to try something different. We were on the Carnival Pride when it cruised out of Port Canaveral last year.
We did not take our kids with us on the Pride so I can't help with that part of the cruise - we did not even go look at the children's area.
Overall we were pleasantly suprised by Carnival. We will do Carnival again - this time on the Miracle out of Tampa with our DS7 and DS1. We also have another Magic cruise planned.
Cost - Carnival was less than half the cost of the
Disney cruise for the same week we cruised for similar stateroom.
Cabin/Balcony - We always get a balcony. Usually a CAT. 6 on Disney and an 8E on Carnival. The cabins are almost identical in size and placement of furniture. The Carnival Balcony was much bigger than Disney's and we often get the far aft non-plexiglass balconies on Disney.
Embarkation - We have not gotten on the Magic before 12:15. Carnival began at 11:30. We find both to go very smoothly.
Casual Buffet restaurant was so much nicer on the Pride than on the Magic. There was plenty of space. Much larger selection with stations for many different types of food.
Dining room food - Carnival was better. Keep in mind we had had the same menus on the Magic with few if any changes for 3-4 years in a row. So we could have just been tired of the same menus - not sure.
Alternative dining - More expensive ($25 PP) on Carnival, but also a little better than Palo.
Service - Slightly better on DCL.
Spa - Much better on Carnival.
Entertainment - Much better on Disney.
Disembarkation - Easy on both. Carnival uses a color coded system and our color was the first to disembark, so it could have been we would not have had such an easy time on Carnival if our color had been the last called.
I can't think of anything else. If you have any specific questions please ask. We also would like to try the Glory sometime!