I read this as it being a one way iteberary to Puerto Rico. If that's true, only a passport is acceptable per the link above.
Sailing from: Galveston to San Juan, San Juan to Miami, San Juan to Port Canaveral, New York to San Juan or Miami to San Juan
The following guidelines are based on government regulations, which are subject to change at any time. It is your responsibility to check with your
travel agent, government agency, embassy or consulate to ensure that you have all the proper documentation to board the ship and enter each of the countries on the ship's itinerary.
If you're visiting any country other than the U.S., remember to contact the consulate of that country to ensure you have the documentation required to visit. Travelers can visit the
U.S. State Department's website. Guests without proper documentation will be denied boarding.
Adults who are not the parent or legal guardian of a minor traveling with them must present an
Authorization For Minor To Travel Without a Parent or Legal Guardian Form signed by the child’s parent(s) or legal guardian.
Required Documents for U.S. Citizens
All Guests claiming U.S. citizenship, including children, must provide one of the following:
- A valid U.S. Passport
- A valid U.S. Passport Card
- A valid Trusted Traveler Card (NEXUS, SENTRI, FAST)
Photocopies of passports are not acceptable.
Guests disembarking in a foreign port and not returning to the ship should be sure that they meet all of the documentation and entry requirements of that country. In addition, they may be assessed a fine or penalty according to local or national regulations.