I was recently on the Costa Fortuna with 400 other dancers. First time on a Costa ship though I have been a dance host for 18 years and been on many, many cruises. I was very impressed with the size and number of dance venues and the quality of the music. Even with that huge number of dancers, most of the time, there was room to dance in one of the venues. When it was crowded it was a nice moment to practice my floor craftsmanship. The Cunard ships are also excellent for dancing because of the large ballroom floor. The disadvantage of the Cunard ships is the music tends to be primarily traditional ballroom. There is little WCS, hustle, NC2, or salsa. The Fortuna offered a nice balance of everything. Highly recommended and I am going as a paying passenger in September out of Venice...just to dance.