Navigator of the Seas does not ordinarily have 4 night itineraries, so when I saw this, I had to book. Plus, it helped that RC was offering a military discount that was about 50% off the advertised price.
Embarkation was smooth, at least for me. I showed up at about 10:45 and the check-in line was completely empty. Boarding started at about 11:30 and I was one of the first on board. I say "for me" because I am Diamond Crown and Anchor, so I had priority boarding. Otherwise, Ft. Lauderdale is not designed to handle a whole lot of people. I would not have wanted to show up at peek time.
The cruise was fabulous. The two production shows and the ice show were among the best shows I've ever seen.