Less than one week after a tour bus robbery prompted Carnival Cruise Lines and Princess Cruises to bypass two mid-week scheduled port calls in St. Kitts, executives from both lines have announced the reinstatement of their original schedules.

Holland America Line has launched a fan-friendly Facebook contest called “Win the Key to Half Moon Cay.” Named for the line’s private Bahamian island, the contest runs through Jan. 3.

Seven new land adventures are among dozens of extended mid-voyage excursions Silversea Cruises is offering in 2011. Unlike a partial-day shore tour, these single- or multiple-day inland adventures are designed to provide a more intimate, in-depth and personal encounter with the local people, history, wildlife and natural attractions that lie just beyond the ports of call.

In 2011, Crystal Cruises is doubling the number of summer North Cape cruises with two departures to Norway’s western coast, the Polar Ice Cap and the Arctic Circle. The June 13 Wine & Food-themed cruise celebrates the summer solstice on June 21, officially the longest day of the year, when the sun stays above the horizon.

Royal Caribbean International will revitalize Radiance of the Seas and Splendour of the Seas in 2011 as part of its Royal Advantage enhancement program. The two ships will join others already scheduled for updates -- Oasis of the Seas, Liberty of the Seas and Freedom of the Seas.

In 2011-12, Princess Cruises will base five ships in the Caribbean. The Ruby Princess will operate seven-day Eastern Caribbean cruises roundtrip from Fort Lauderdale on Sundays. The itinerary features Princess Cays, St. Maarten, St. Thomas and Grand Turk from Nov. 5, 2011, to April 29, 2012. The ship will also offer a nine-day Southern Caribbean holiday sailing from Fort Lauderdale on Dec. 30, 2011, calling at Antigua, Barbados, Dominica, St. Thomas and Princess Cays.