Holland America's longer cruises seem to appeal primarily to those over 60, but the average age on one-week cruises is plummeting, thanks to concentrated marketing to the line to a younger clientele who understands the value the line offers in service & comfort. Such new features as Internet cafes with wireless access and boutique alternative restaurants help, as well as the expansion of the Club HAL program with kids and teens centers.
All that said, those who like to bar-hop or shake their booties well after midnight should stick to the 7-night Caribbean cruises, or are likely to find themselves doing so mostly with the entertainment staff. Bedtime on longer cruises still tends to be about midnight and youngsters are few and far between.