I was on the May 19, 2013 sailing of the brand new NCL Breakaway to Bermuda. Overall, we had a marvelous time. There were a few hiccups, as you'd expect, but overall, everything went very smoothly and we were quite happy with how everything turned out.
I booked about 10 months out, and the prices for our sailing kept rising steadily within a few weeks. With such a new ship, I'd highly recommend booking early, these prices are not likely to come down.
Embarkation was very easy, but we made sure to arrive early. We got to Pier 88 around 11, and were onboard around noon. Got through all the lines very quickly, and we were able to get seats to wait until we could board. Boarded in one of the first groups let on.
Great little balcony room in a fantastic location. Get off the aft stairs, turn left, and it's just around the corner. The location made it super simple to get places, and as someone who has zero sense of direction, I couldn't lose my cabin! Balconies are smaller on Breakaway than on most other NCL ships, but we didn't find the size diminished our use of it. This cabin is on one of the bump outs, it is NOT a corner one with a larger balcony, but because of its position on a bump, has a view that can only see a handful of cabins in either direction, not everything. There's not a lot blocking the view here, which is fantastic. You can see the lifeboats below, but it didn't bother us.