Book through 31 July, and you'll get free onboard credit (in U.S. dollars, as that is on the onboard currency on NCL ships), based on cabin category:
$50 per inside cabin
$60 per outside cabin
$75 per balcony cabin
$100 per mini-suite
$150 per suite
NCL's sale begins today, 29 July, and runs through 31 August -- so even if you miss that early-bird booking window, you can still save. Cruise-only and fly-cruise prices start at just £249 (based on a five-night, cruise-only fare to the Western Caribbean).
For more information or to book a cruise, visit NCL's Web site.
--by Erica Silverstein, Senior Editor