This was our third cruise and all three were with Norwegian Cruise Line. Two on the Sun and one on the Spirit.
We left (my wife and I) from Miami and the embarkation process was terrible. It took two hours to get from the airport to the ship. Apparently there were two Norwegian ships in Miami and this caused problems in transportation from the airport to the ship. Once at the ship we had no problems getting on the ship. We shouldn't since most of the people already were processed. We fault Norwegian with the delays at the airport. They should have had enough busses there to drive us the few miles to the ship. But this can happen every once in awhile and the weather was great and after all we were on vacation so whether we sit in the airport or the boat is no big deal.
The Panama Cruise or any cruise that is of longer duration than 7 days appear to attract the older crowd. Since we were on a 17 day cruise, approximately 89% of the passengers appeared to be over 65. I guess they have the money and the time. We are in our late fifties so we were pretty much in the ballpark.