Last year I did a solo cruise on MSC Meriviglia. It was my first first MSC cruise. I went in September they had about 35% capacity. The ship its self was huge and honestly the most beautiful ship I had ever seen. The shows were great, although a bit too loud for my comfort. The food was ok, some things were better then others. I only at at the buffet. I wanted to to try sushi, and paid for that. It was ok. They also offered crepes for a fee. It was about 9 bucks, that tasted bad. I actually threw more then half in the trash and I am not even fussy about food. The ice cream and gelatos were also for a fee, I tried it once and it was nice just not cheap.
I kind of stayed to myself and didn't really hang out with anyone. Just a short chat here and there. It was relaxing and nice.