Panama Canal
Panama Canal cruises are longer, often ten and eleven days in duration. The traditional full-transit cruise leaves from San Juan and ends in Acapulco, or another Mexican Port, however there is an increasing variety of cruises that do "partial transit", which means that the ship does not actually go through the Panama Canal. Partial transit cruises enter a few locks and turn around on the interior lake, heading back to their port of embarkation. These cruises are often seven days in length, or they operate round-trip from Florida. The longer duration, more expensive airfare, and general appeal of the Panama Canal, tends to skew the average passenger age into the mid-fifties, with many fewer people in their twenties through thirties noticably absent. This makes for a quieter on board experience, particularly at night.