Prices at Royal Caribbean and Carnival, as well as MSC Cruises, which has recently been much cheaper than its rivals, have been driven up by increased demand. All three cruise lines have increased their capacity out of Florida, their top market by far, and ships still have generally been sailing full.

A Royal Caribbean International Alaska voyage became a cruise to nowhere over the weekend, with the line canceling the sailing after guests had already boarded. The cruise line’s Radiance of the Seas ship experienced propulsion issues,

A popular cruise line announced the cancellation of the trip to Alaska. Royal Caribbean International announced its decision last minute after the guests had already onboarded Radiance of the Seas. While the debarking exercise is underway,

Guests onboard the cruise line were told their trip was canceled and were being sent home despite already being aboard the Royal Caribbean ship.

Outbreaks of norovirus have sickened nearly 200 people on Princess Cruises and Royal Caribbean International ships in the past few weeks, according to the Centers for Disease Control and Prevention. Ninety-four guests and 20 crew members on the Sapphire Princess reported being ill during a round-trip cruise that left Los Angeles and had stops in Hawaii and the South Pacific.