Get up to $750 in onboard credit when you book a cruise at Expedia. Credit levels depend on the amount you spend on your cabin. Spend at least $750 to get a $25 credit, or spend more than $10,000 to get the full $750. The credits appear in your onboard account on the day you embark. We found one four-night Disney Cruise with prices from $1,401. Book by 5/31. Travel between 6/1 and 12/31. Taxes and fees may be added.