The cards are available in multiple holiday-themed varieties, including Happy Hanukkah, and also can be used for any onboard purchase.
And for those still scrambling for gifts even on Christmas Eve, Princess offers e-cards that can be sent instantly via email, or scheduled for a future delivery date and time. Cards may be customized with multiple designs with the option to add a personal photo or even audio. For those who prefer to send gifts via mail, traditional gift cards ship free by first-class USPS for orders $100 or more.
The cards may be ordered here.