I took the one night cruise to nowhere on the Dawn Sept 1st 2007. Norwegian will be running this cruise to nowhere on the Norwegian Spirit every Sat in Sept and October.
This is the first time I had cruised with NCL, previously I've been on RCCL 3 times. I had a good time for the night and it was a great value for a day trip and a night over, but I was a little disappointed.
The last cruise I took was on RCCL's Explorer of the Seas. I took it from Miami but its since taken up residency at Port Liberty, NJ, one of the NYC area ports. The Explorer has a rock climbing wall, the indoor adult pool/jacuzzi area, an ice skating rink, and an indoor mall (Promenade) with high ceilings that gave the ship a very open feel. The Promenade also helps you locate your room as you can tell what you're nearest to in the promenade. RCCL also tosses in sculptures in the hallways to help orient you to your room.