A 4-day "New Year's" cruise on the Imagination out of Long Beach was our first trip with Carnival in a number of years, and overall we were satisfied with the brief jaunt, although there were a couple of annoyances.
Check-in was efficient, our cabin was ready at the advertised time. Our standard "ocean view" cabin on Deck 7, although spare (think Motel 6 décor), was reasonably sized with sufficient room to move around the bed and plenty of closet hanging space, a smallish dresser with stool and a single straight-backed chair. Bath was typically compact but did have a relatively large shower. No fridge/mini-bar, hair dryer available by request.
Food is of course a major cruise item, and we were impressed with the dining room offerings. Carnival is slanted toward a youthful demographic so the ambience is somewhat less formal than on some other lines (if that's a priority), but the food & service were uniformly excellent.
Ship's staff overall was also universally excellent, friendly and responsive to every request. Never a negative moment throughout the trip. Hard to imagine some other reviewers complained on this score.
Entertainment was about what you would expect for a short cruise, with pretty good music offerings in the main showroom tailored to the youngish demographic. These were augmented by a handful of lounge acts that were OK but, let's face it, not particularly impressive.
There were a couple of negatives related to internal ship's air processing. First was a lack of cabin temperature control. Weather outside at the time was generally in the low 50's and the cabins have no thermostatic control or heat source, only an airflow restricting knob in the single supply duct. Our cabin was constantly uncomfortably chilly, ranging from 60 to 64 as measured by our neighbor's little travel thermometer. Fine for sleeping but not so good otherwise, and we were told nothing could be done about it. Secondly, for anyone sensitive to cigarette smoke over half of the Promenade deck was no-go territory due to its free sharing of air handling with the tobacco-saturated casino. Most unappetizing, and significant because the Promenade deck is a central component of the ship's indoor public area.
A third problem was what I felt was excessive noise in the cabin, which seemed to come from everywhere. Voices & walking in the hallway were conducted in with scarcely any loss. Not quite so bad but still perfectly audible were conversations which strangely were apparently being held in cabins on the deck below us. Thump-thump-rumble music from one of the entertainment venues also located on an entirely different deck precluded sleep one evening but fortunately stopped around 10:30. We could not recall ever being on a ship quite so poorly soundproofed.