Sorry been out of town and unable to respond. I will give a few quick thoughts on why I thought the Luminosa was so bad. The Lido deck area is the worst layout I have ever seen, it is very crowded, very little seating, I actually was taking my food back to the cabin to eat because of lack of anywhere to sit. At off times it was a bit better but during peak times, good luck. The food was the absolute worst of any cruise I have been on. The burger place is not a Guy's and it was horrible! The only desserts were a small area with cut up sheet cakes, not the usual Carnival desserts. Pizza was good, sandwiches were not good. Wait times in the dining room were 1-2 hours. It felt like no one really knew what they were doing.
There were plumbing issues all over the ship. Our shower flooded the first morning. Toilet in our cabin wouldn't flush when you wanted it to but then would flush on its own over and over at random times. Public restrooms were often closed due to issues.
We had a balcony on deck 4, aft. We couldn't figure out why we always smelled cigarette smoke, turns out they have deck 3 aft blocked off as a smoking area for the crew! It was nonstop smoke, we could not enjoy our balcony at all. Beware if you have a balcony on the aft end of the ship!
There were so many issues with this ship, I have never heard so many complaints from other passengers. I seemed like none of the people who are in charge really cared that much.
I can try and answer other questions.