In order to get married in Puerto Rico you need to bring the following documents:
Each of you must provide a medical certificate that shows you have complied with tests required for marriage in your place of residence. Be aware that this certification is only valid for ten (10) days from the date of issuance. After ten days, you would have to get a new certificate in order to get married.
There are no residency requirements in order to be married in Puerto Rico but non-residents must submit an affidavit or sworn statement that the sole purpose of their visit is to get married. Non-U.S. citizens must include in this affidavit that they will not be staying in Puerto Rico longer than established in the visa or federal entrance permit to US territory. If the affidavit is not written by a lawyer, it must be accompanied by the certificate of the County Clerk of the state to certify that she/he is qualified to notarize documents in your state and have the embossed seal. If it is issued in a foreign country, it must be accompanied by the Apostille seal.
There are no passports required for US citizens in Puerto Rico, however the bride and groom should have a valid photo ID, which can be a passport, state-issued ID, a visa, or green card.
You need to bring your Birth Certificates in order to record your official name, be sure to bring originals of both birth certificates.
If you are divorced or widowed, an original of the corresponding official documents is necessary. Minors of 18 years of age must be accompanied by both parents with legal guardianship, duly identified.
Purchase an Internal Revenue stamp for the sum of $150.00 at the Demographic Registry office. This will be affixed to the license to authenticate the document.