The average age of cruisers on Crystal River is mid-50s, with approximately half new to Crystal entirely. Passengers are generally well-off, sophisticated travelers who prize authentic cultural travel. Though most passengers are couples or small groups traveling together, the line does attract families during the school holidays, thanks to its connecting rooms and two-bedroom suites. Most come from North America, but you'll find a smattering of international passengers on most sailings.

No, though it's not the most casual river cruise option. Daytime dress is comfortable and casual, even in the dining room, although swimsuits, cover-ups/robes and baseball hats are not considered appropriate. The evening dress code is Crystal Casual, which the line describes as a dressed-up version of daytime casual -- think slacks and a collared shirt for men, nice pants or capris with blouse, or sundress for women.

Just about! Crystal includes everything in the cruise fare from spirits, specialty coffees, soft drinks and wines to gratuities on board and ashore. You also receive free unlimited Wi-Fi, all specialty dining, a rich selection of complimentary shore excursions to choose from, self-service laundry, personal butlers, access to ebikes, airport transfers and more; top suite categories have additional perks.

You will pay extra for select shore excursions, Michelin-starred dining ashore and for treatments in the spa.

During the day, Crystal offers culturally immersive shore excursions, and when ships are in port overnight, passengers often choose to dine at Michelin-starred restaurants on shore for an optional fee. Onboard, most passengers attend the lecture series featuring experts in the destination being visited, as well as the nightly concerts that might include classical favorites or a local group. The more active cruisers enjoy the indoor swimming pool and a fitness center, as well as the bicycles and kayaks available in port. Depending on the passenger mix, evenings may be active with dancing in the Palm Court.