I’ve cruised with only 3 lines — Carnival, Princess and Norwegian. I liked Princess the best. Service was outstanding — even more so than the other 2. I can’t say I ever had a bad time in any of cruises. Some were just better than others.
Took a Mediterranean cruise with Princess. One of the amenities was a basket of fruit left in the cabin for the whole cruise. One morning, we were on our way out of the cabin ad our cabin steward was coming in to clean. I happened to say to my mother that the peaches in that fruit basket were outstanding. The steward overheard because when we came back to the cabin later, the basket was filled with peaches. The last full day of the cruise, the steward made a point of apologizing. He was out of peaches.
I crossed the Pacific six times between 1951 and 1961 on MSTS. Seattle to Yokohama. Yokohama to Seattle. Not exactly a cruise line, tho.