My husband (28) and I (29), along with my sister (27) and her husband (28), just finished the 5-day Nassau & Key West voyage aboard the Fascination. This was our first ever cruise, so I don't have anything to compare it with, but we had a GREAT time!!
Here's our take on various topics:
The ship: The main public areas are very vegas style, with all th neon lights/mirrors. Not really our style, but fine. Lots of room to find a quiet place to sit and read, even with all the people aboard. Well laid out and easy to get to wherever you want to go, too. The Serenity area is a nice touch.