If you are thinking of booking a cruise this year then check out this offer from Expedia. They are offering up to $750 in onboard credit, starting from $25 credit for bookings over $750.
The offer is available for bookings made by June 30, 2015 for a cruise departing June 1 to December 31, 2015.
Book a Cruise this Summer and Enjoy up to $750 Onboard Credit with Expedia!
T&C’s
Onboard credit amount is scaled according to the total cruise cabin price (total price of the cruise-only fare based on the first and second guest in the cabin, not including insurance, government fees, taxes and port expenses)
Cabin Price Onboard Credit
$750-$999 $25
$1,000-$1,999 $50
$2,000-$2,999 $100
$3,000-$4,999 $200
$5,000-$9,999 $300
$10,000 $750
See website for full terms and conditions.