Just got off the Prima yesterday morning and though she is a beautiful ship, I won't be sailing her or her class of ship again. I've sailed many NCL Breakaway (and plus) class ships and loved them all. I even liked the Epic, but this one misses the mark by a mile.
I don't hate the Prima, but it just has too many small irritants which lowered my enjoyment of the cruise. It seems to be a very common opinion as almost everyone I spoke to on the ship was of similar opinion.
The ship's internal layout is very convoluted and hard to navigate (just try and find the Hudson dining room), even by the end of the cruise, many people were still confused. The buffet is minuscule, has very little seating and food selection is lacking and very repetitive.
The new re-designed solo studios are AMAZING!
By getting rid of the useless connecting door and moving the sink there, making the shower larger and putting a glass partition between the new bathroom and rest of the cabin they have vastly improved the studio experience. Removing the cabinets and replacing them with shelves also makes the less than 100 sq ft stateroom feel larger than it is.
The connected lounge is also a hit. They've made it in 3 sections: a drink/snack area, a couch and TV area and a quiet area with day beds. There was almost always some people enjoying this lounge at almost all times.
Scuba diving with Cozumel Adventures was quite nice.
Scuba diving with Just Dive Cayman (at the Atlantis Dive Center, right next to the port)
2 superb wreck dives, excellent service.