The ambience on the 1,924-passenger Noordam is of the afternoon tea and violin music variety. Holland America Line regulars — most in the 55-plus age group, with emphasis on the “plus” — like it that way. Don’t expect lavish entertainment or a large variety of activities, although there is a multilevel theater for stage shows and a prominently placed casino. Instead, attend cooking demonstrations at the Culinary Arts Center, or spend some time in the well-stocked library.