International Expeditions' passengers typically fall into the 50-plus age range, and they're curious, well-educated and active. Families are welcome, as are solo travelers. (Some ships have dedicated solo traveler cabins with no single supplement.)

No. International Expeditions sailings are completely informal, and you should plan to pack for comfort, the weather and the activities in which you'll be participating.

Most everything is included in the cruise fares on an International Expeditions sailing, including accommodations, all meals, guided tours and lectures by experts, all excursions, and arrival and departure transfers. On some sailings, local drinks (including wine and beer) are included, but on most trips wine, beer and soda cost extra. Gratuities are also an extra expense and must be paid for in cash with U.S. dollars preferred. Some sailings also include a pre- and/or post-cruise hotel night.

International Expeditions' cruises go to some of the world's most remote and exotic locations, so cruisers can't wait to get off the ship and explore. In most places it's the wildlife that brings people ashore, and passengers flock to excursions that feature hikes, birding, kayaking, snorkeling and skiff rides. In the Amazon, the piranha fishing excursion is particularly popular, as are visits to local villages and schools.

Best for: Active, wildlife-loving travelers seeking to explore bucket list destinations, including the Amazon and Galapagos

Not for: People who wants to stay connected to the outside world or who expect TVs in their rooms