When will my onboard credit be applied to my account? November 12, 2018 20:08 Updated Your onboard spending will be applied to your cruise account within 24 hours of boarding your cruise. Related articles How do I redeem the Onboard Credit? What is my Post-Booking onboard spending amount? When will I get my cash back rebate? When do I need to complete the Post-Booking Bonus form to qualify for my onboard credit? What if I wait too long to complete the redemption steps for my Post-Booking Bonus?